ASTROSAT CZTI

Data Quality Report

Orbit 54150

Creation date: 2025-10-01T15:41:06.258617
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/AS1A14_012T01_9000006512_54150cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54150cztM0_level2_quad_clean.evt
Size (bytes)506,232,00081,524,160
Size482.8 MB 77.7 MB
Events in quadrant A3,488,184572,590
Events in quadrant B2,945,391613,421
Events in quadrant C5,506,393448,574
Events in quadrant D6,329,468412,492

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147981
B0131951
C0211021
D0229941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60372003.312904%
B6037881.457678%
C6036112718.671306%
D6036129021.371769%

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 6972 6038 167 167 2.40% 2.77%
B 6972 6038 31 31 0.44% 0.51%
C 6971 6037 1135 1135 16.28% 18.80%
D 6971 6037 1234 1234 17.70% 20.44%

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 15 174 668568 4309.01 624 610 155.0
A 7 29 200176 1287.4 624 610 155.0
A 0 8 71361 456.42 624 610 155.0
B 5 236 209599 1582.77 616 596 132.0
B 5 185 85880 645.85 616 596 132.0
B 10 245 60842 456.24 616 596 132.0
C 1 241 3073015 20482.51 537 532 150.0
C 0 224 147001 976.43 537 532 150.0
C 9 53 77791 515.04 537 532 150.0
D 8 176 2268126 14872.62 533 509 152.5
D 13 21 937485 6145.34 533 509 152.5
D 10 181 269460 1763.97 533 509 152.5

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