ASTROSAT CZTI

Data Quality Report

Orbit 58789

Creation date: 2026-08-09T20:21:29.033792
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_106T01_9000006596_58789cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58789cztM0_level2_quad_clean.evt
Size (bytes)2,316,988,800293,112,000
Size2.2 GB 279.5 MB
Events in quadrant A12,597,7992,211,755
Events in quadrant B13,275,3762,322,025
Events in quadrant C11,848,8002,094,747
Events in quadrant D46,350,903735,865

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05188811
B0540494
C0505434
D01526274

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04480
B04480
C04480
D04480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A219276412.923337%
B219289604.377964%
C219295442.480733%
D219291466166.856674%

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 26303 21928 199 199 0.76% 0.91%
B 26303 21928 333 333 1.27% 1.52%
C 26304 21929 221 221 0.84% 1.01%
D 26303 21928 13572 13572 51.60% 61.89%

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 3 14 1237062 2008.38 2522 2459 614.7
A 15 233 815264 1322.22 2522 2459 614.7
A 7 64 330241 533.22 2522 2459 614.7
B 8 234 571208 1101.07 2457 2363 516.6
B 4 171 508673 980.03 2457 2363 516.6
B 10 45 429836 827.43 2457 2363 516.6
C 13 3 914087 1375.15 2429 2403 663.0
C 12 249 268984 402.1 2429 2403 663.0
C 6 223 234110 349.5 2429 2403 663.0
D 11 129 23656556 50906.99 1653 1579 464.7
D 12 110 15197980 32703.61 1653 1579 464.7
D 2 249 289037 618.63 1653 1579 464.7

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

TCT plots

Parameter TCT0 TCT_healed
Tct