ASTROSAT CZTI

Data Quality Report

Orbit 59369

Creation date: 2026-09-17T19:16:46.596748
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_033T01_9000006608_59369cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59369cztM0_level2_quad_clean.evt
Size (bytes)481,550,400106,200,000
Size459.2 MB 101.3 MB
Events in quadrant A3,329,945710,567
Events in quadrant B4,425,633742,735
Events in quadrant C3,536,666679,119
Events in quadrant D5,994,122600,607

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147102
B0176822
C0153452
D0225842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69321612.322562%
B69334576.591663%
C69331512.177989%
D69336679.620655%

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 9092 6932 16 16 0.18% 0.23%
B 9093 6933 219 219 2.41% 3.16%
C 9093 6933 23 23 0.25% 0.33%
D 9093 6933 519 519 5.71% 7.49%

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 15 233 51590 258.6 815 794 196.4
A 3 245 39749 198.32 815 794 196.4
A 14 238 24674 121.57 815 794 196.4
B 4 236 533931 3193.53 790 761 167.0
B 4 201 226482 1352.0 790 761 167.0
B 4 171 218110 1301.86 790 761 167.0
C 12 252 166727 767.42 793 785 216.2
C 14 254 89617 410.81 793 785 216.2
C 6 223 74583 341.29 793 785 216.2
D 12 110 2078813 9358.68 778 742 222.0
D 1 27 324661 1458.78 778 742 222.0
D 12 2 294329 1322.18 778 742 222.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct