ASTROSAT CZTI

Data Quality Report

Orbit 20160204_T01_055T01_9000000314_level2

Creation date: 2025-10-27T14:27:59.652078
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T01_055T01_9000000314cztM0_level2.fits modeM0/AS1T01_055T01_9000000314cztM0_level2_quad_clean.evt
Size (bytes)1,795,752,0001,833,189,120
Size1.7 GB 1.7 GB
Events in quadrant A10,419,39410,740,371
Events in quadrant B10,416,44610,769,938
Events in quadrant C10,325,17410,279,686
Events in quadrant D8,937,8449,445,702

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09068170
B09261820
C08665480
D08381640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041720
B041720
C041720
D041720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139697866270760139693811302446
B1139697866270760139693811302446
C1139697866270760139693811302446
D1139697866270760139693811302446

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20855112960.621431%
B20854918270.876053%
C2085547080.339480%
D20856212330.591191%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 245767 208566 0 0 0.00% 0.00%
B 245767 208398 0 0 0.00% 0.00%
C 245767 208566 0 0 0.00% 0.00%
D 245767 208567 0 0 0.00% 0.00%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 29 9566 11.22 2705 2517 628.1
A 7 110 9123 10.52 2705 2517 628.1
A 0 30 7466 7.88 2705 2517 628.1
B 2 9 8395 11.76 2747 2603 492.7
B 5 128 6966 8.86 2747 2603 492.7
B 10 225 6816 8.55 2747 2603 492.7
C 2 127 6726 6.4 2722 2509 658.9
C 9 242 6660 6.3 2722 2509 658.9
C 3 235 6588 6.19 2722 2509 658.9
D 1 19 6523 6.97 2549 2330 601.6
D 6 44 6246 6.51 2549 2330 601.6
D 11 82 6243 6.5 2549 2330 601.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter