ASTROSAT CZTI

Data Quality Report

Orbit 52994

Creation date: 2025-07-15T21:12:34.488312
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/AS1A13_003T01_9000006486_52994cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52994cztM0_level2_quad_clean.evt
Size (bytes)994,832,64083,445,120
Size948.7 MB 79.6 MB
Events in quadrant A15,628,892208,884
Events in quadrant B5,508,646727,512
Events in quadrant C5,994,582602,139
Events in quadrant D9,130,893481,332

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0513781
B0215571
C0229281
D0321751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7274542574.580698%
B72744315.925213%
C727474610.255705%
D7275202827.876289%

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 7723 7273 4369 4369 56.57% 60.07%
B 7723 7274 104 104 1.35% 1.43%
C 7724 7274 442 442 5.72% 6.08%
D 7725 7276 1407 1407 18.21% 19.34%

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 9 191 11177627 86926.41 513 500 128.6
A 15 190 1157191 8995.78 513 500 128.6
A 7 206 1015375 7892.86 513 500 128.6
B 10 254 1620800 9603.89 780 752 168.7
B 10 63 303985 1797.61 780 752 168.7
B 10 247 96150 565.53 780 752 168.7
C 7 80 799460 3936.65 745 737 202.9
C 9 38 781172 3846.51 745 737 202.9
C 12 254 478342 2353.96 745 737 202.9
D 2 62 2629116 13411.38 700 668 196.0
D 8 176 1260609 6428.71 700 668 196.0
D 2 37 862146 4395.6 700 668 196.0

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