ASTROSAT CZTI

Data Quality Report

Orbit 59138

Creation date: 2026-09-02T12:34:54.501699
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_59138cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59138cztM0_level2_quad_clean.evt
Size (bytes)692,798,40086,866,560
Size660.7 MB 82.8 MB
Events in quadrant A3,224,123649,619
Events in quadrant B3,860,979691,203
Events in quadrant C4,527,613605,727
Events in quadrant D13,536,645238,065

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139682
B0157782
C0177513
D0444942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6385590.924041%
B63853355.246672%
C63845007.832080%
D6384411564.458020%

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 7600 6386 15 15 0.20% 0.23%
B 7600 6386 217 217 2.86% 3.40%
C 7599 6385 414 414 5.45% 6.48%
D 7598 6384 4042 4042 53.20% 63.31%

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 209856 1161.01 726 707 180.1
A 10 251 140833 777.85 726 707 180.1
A 15 233 20146 107.91 726 707 180.1
B 4 236 652930 4276.85 714 689 152.5
B 5 236 157574 1028.72 714 689 152.5
B 4 201 113855 742.05 714 689 152.5
C 15 219 1474566 7668.92 693 686 192.2
C 12 252 147406 763.42 693 686 192.2
C 5 250 94603 488.67 693 686 192.2
D 12 1 10769170 84006.55 444 423 128.2
D 12 110 401440 3128.32 444 423 128.2
D 5 38 183881 1431.15 444 423 128.2

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