ASTROSAT CZTI

Data Quality Report

Orbit 20220822_A10_094T23_9000005304_level2

Creation date: 2026-01-04T22:40:09.379626
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/AS1A10_094T23_9000005304cztM0_level2.fits modeM0/AS1A10_094T23_9000005304cztM0_level2_quad_clean.evt
Size (bytes)82,192,32098,763,840
Size78.4 MB 94.2 MB
Events in quadrant A505,084625,900
Events in quadrant B476,048605,037
Events in quadrant C502,220628,986
Events in quadrant D433,926558,335

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173070
B0190910
C0173430
D0221540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8229130.157978%
B82292503.038036%
C8229430.522542%
D82293564.326164%

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 10351 8228 0 0 0.00% 0.00%
B 10351 8228 0 0 0.00% 0.00%
C 10351 8228 0 0 0.00% 0.00%
D 10351 8228 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 7 110 416 8.55 132 125 34.0
A 0 29 396 7.96 132 125 34.0
A 9 19 395 7.93 132 125 34.0
B 3 80 400 10.37 126 121 26.9
B 2 9 389 9.96 126 121 26.9
B 5 128 362 8.96 126 121 26.9
C 3 203 427 8.42 132 126 35.7
C 3 202 419 8.2 132 126 35.7
C 1 80 405 7.81 132 126 35.7
D 10 189 351 6.77 124 114 35.0
D 7 3 320 5.88 124 114 35.0
D 6 231 309 5.57 124 114 35.0

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