ASTROSAT CZTI

Data Quality Report

Orbit 59150

Creation date: 2026-09-03T01:46:37.399107
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/AS1T05_264T01_9000006602_59150cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59150cztM0_level2_quad_clean.evt
Size (bytes)713,422,08079,128,000
Size680.4 MB 75.5 MB
Events in quadrant A3,047,628627,433
Events in quadrant B3,440,762675,730
Events in quadrant C3,416,087620,778
Events in quadrant D16,017,97335,286

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01302
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01356354
B014723147
C01462871
D052402689

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6263751.197509%
B62552253.597122%
C62621201.916321%
D6204588294.809800%

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 7512 6288 25 25 0.33% 0.40%
B 7512 6279 171 171 2.28% 2.72%
C 7512 6286 80 80 1.06% 1.27%
D 7511 6204 5778 5778 76.93% 93.13%

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 10 251 187442 1055.85 714 696 176.9
A 3 14 29285 161.64 714 696 176.9
A 15 233 24353 133.75 714 696 176.9
B 0 186 342432 2275.76 699 671 150.2
B 4 236 214803 1425.89 699 671 150.2
B 5 236 41267 270.33 699 671 150.2
C 5 250 327748 1689.23 698 692 193.6
C 14 254 138323 710.86 698 692 193.6
C 12 252 79355 406.29 698 692 193.6
D 12 1 14067752 268361.74 175 166 52.4
D 12 110 1010896 19281.29 175 166 52.4
D 13 66 57597 1095.59 175 166 52.4

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