ASTROSAT CZTI

Data Quality Report

Orbit 20220412_A11_037T01_9000005066_level2

Creation date: 2026-01-02T10:29:43.173649
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/AS1A11_037T01_9000005066cztM0_level2.fits modeM0/AS1A11_037T01_9000005066cztM0_level2_quad_clean.evt
Size (bytes)109,085,760104,310,720
Size104.0 MB 99.5 MB
Events in quadrant A666,848637,099
Events in quadrant B628,784620,718
Events in quadrant C636,058575,585
Events in quadrant D524,870478,230

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250880
B0297120
C0305680
D0436270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12239180.147071%
B122392972.426669%
C122393522.876052%
D12239144311.790179%

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 16295 12238 0 0 0.00% 0.00%
B 16295 12238 0 0 0.00% 0.00%
C 16295 12231 0 0 0.00% 0.00%
D 16294 12206 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 9 19 575 9.18 174 163 44.9
A 7 110 569 9.05 174 163 44.9
A 0 29 529 8.16 174 163 44.9
B 2 9 532 10.66 166 158 35.1
B 3 80 501 9.78 166 158 35.1
B 2 8 469 8.87 166 158 35.1
C 3 203 525 8.07 168 157 45.6
C 3 202 495 7.41 168 157 45.6
C 3 187 452 6.47 168 157 45.6
D 4 160 408 6.53 149 136 41.7
D 7 3 398 6.29 149 136 41.7
D 1 3 389 6.07 149 136 41.7

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