ASTROSAT CZTI

Data Quality Report

Orbit 57936

Creation date: 2026-06-13T10:19:36.307981
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_125T11_9000006582_57936cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57936cztM0_level2_quad_clean.evt
Size (bytes)467,305,920120,925,440
Size445.7 MB 115.3 MB
Events in quadrant A3,733,994794,349
Events in quadrant B3,974,625839,399
Events in quadrant C4,712,031739,901
Events in quadrant D4,225,078705,248

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174551
B0180081
C0199821
D0186601

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8385360.429338%
B83851942.313655%
C83861802.146435%
D83861011.204388%

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 8405 8386 1 1 0.01% 0.01%
B 8405 8386 32 32 0.38% 0.38%
C 8406 8387 94 94 1.12% 1.12%
D 8406 8387 62 62 0.74% 0.74%

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 4 222 97777 433.05 911 887 223.7
A 7 64 25083 108.14 911 887 223.7
A 3 31 22637 97.21 911 887 223.7
B 3 238 68426 351.67 901 866 192.1
B 10 247 52197 267.19 901 866 192.1
B 10 16 47167 241.01 901 866 192.1
C 15 224 1013804 4239.96 884 875 238.9
C 1 16 79872 330.67 884 875 238.9
C 14 254 63695 262.95 884 875 238.9
D 2 62 135094 552.45 876 837 243.0
D 5 32 122134 499.12 876 837 243.0
D 12 251 111652 455.99 876 837 243.0

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