ASTROSAT CZTI

Data Quality Report

Orbit 53001

Creation date: 2025-07-16T17:19:49.837694
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_53001cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_53001cztM0_level2_quad_clean.evt
Size (bytes)897,399,36072,486,720
Size855.8 MB 69.1 MB
Events in quadrant A15,232,520105,685
Events in quadrant B4,050,050667,924
Events in quadrant C7,261,191471,797
Events in quadrant D6,176,645499,506

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0496197
B0164352
C0261852
D0229182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6439552585.805249%
B64391131.754931%
C6440145922.655280%
D644084413.105590%

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 7373 6438 4887 4887 66.28% 75.91%
B 7374 6441 67 67 0.91% 1.04%
C 7375 6442 1299 1299 17.61% 20.16%
D 7375 6442 689 689 9.34% 10.70%

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 12110771 126619.15 374 365 95.6
A 15 190 1294983 13535.75 374 365 95.6
A 0 8 147053 1533.68 374 365 95.6
B 10 254 932389 6490.56 665 642 143.6
B 10 247 118517 821.12 665 642 143.6
B 4 81 94034 650.57 665 642 143.6
C 1 241 2457673 15070.55 590 586 163.0
C 15 224 1395155 8553.59 590 586 163.0
C 7 80 511199 3131.85 590 586 163.0
D 2 62 1464737 8312.21 612 586 176.1
D 8 176 974992 5531.85 612 586 176.1
D 15 78 325631 1845.33 612 586 176.1

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