ASTROSAT CZTI

Data Quality Report

Orbit 04912

Creation date: 2024-06-27T14:48:47.481944
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/AS1G05_118T01_9000000622_04912cztM0_level2.evt modeM0/AS1G05_118T01_9000000622_04912cztM0_level2_quad_clean.evt
Size (bytes)16,836,4803,859,200
Size16.1 MB 3.7 MB
Events in quadrant A145,40826,431
Events in quadrant B141,87830,252
Events in quadrant C148,54524,689
Events in quadrant D49,6445,488

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01275312157
B01311212524
C01727116621
D02141021207

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B130
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012392
B012390
C012391
D012392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29910.334448%
B29400.000000%
C32500.000000%
D10200.000000%

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 4426 595 0 0 0.00% 0.00%
B 4426 585 0 0 0.00% 0.00%
C 4426 649 0 0 0.00% 0.00%
D 3184 197 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 31 7345 786.45 34 33 9.3
A 13 251 3502 373.11 34 33 9.3
A 15 174 648 66.15 34 33 9.3
B 8 3 4475 515.39 33 32 8.6
B 15 204 4193 482.68 33 32 8.6
B 0 219 772 85.84 33 32 8.6
C 9 247 845 76.14 37 37 10.6
C 8 128 668 59.46 37 37 10.6
C 1 16 377 32.04 37 37 10.6
D 2 63 1607 353.77 11 11 4.5
D 2 136 1247 273.97 11 11 4.5
D 2 234 1166 256.02 11 11 4.5

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