ASTROSAT CZTI

Data Quality Report

Orbit 09956

Creation date: 2024-06-27T15:52:57.197766
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/AS1A03_008T02_9000001422_09956cztM0_level2.evt modeM0/AS1A03_008T02_9000001422_09956cztM0_level2_quad_clean.evt
Size (bytes)236,433,60048,395,520
Size225.5 MB 46.2 MB
Events in quadrant A1,574,487316,491
Events in quadrant B1,551,617324,032
Events in quadrant C1,448,371314,594
Events in quadrant D2,380,723296,678

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0642
D0640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0121
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0679490
B0675393
C0650099
D09475212

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3000632.100000%
B2996551.835781%
C2992411.370321%
D29761214.065860%

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 4295 3037 7 7 0.16% 0.23%
B 4295 3038 0 0 0.00% 0.00%
C 4295 3037 0 0 0.00% 0.00%
D 4295 3035 70 70 1.63% 2.31%

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 14 254 107220 1343.02 380 372 79.6
A 13 251 4636 53.6 380 372 79.6
A 0 226 3575 40.26 380 372 79.6
B 0 219 20006 264.11 383 373 74.3
B 0 229 13140 171.75 383 373 74.3
B 4 48 9423 121.74 383 373 74.3
C 13 61 2765 27.91 371 372 85.7
C 8 222 1278 10.57 371 372 85.7
C 3 202 1005 7.38 371 372 85.7
D 1 52 563344 6005.06 362 352 93.8
D 8 195 143415 1525.96 362 352 93.8
D 12 233 102883 1093.63 362 352 93.8

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