ASTROSAT CZTI

Data Quality Report

Orbit 59153

Creation date: 2026-09-03T07:15:39.555771
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_59153cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59153cztM0_level2_quad_clean.evt
Size (bytes)705,778,56084,899,520
Size673.1 MB 81.0 MB
Events in quadrant A3,085,534657,001
Events in quadrant B3,351,017718,787
Events in quadrant C3,781,033641,050
Events in quadrant D15,402,371100,484

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138452
B0144482
C0158012
D0502342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6500801.230769%
B65001472.261538%
C65001902.923077%
D6500552785.030769%

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 7699 6565 16 16 0.21% 0.24%
B 7699 6564 44 44 0.57% 0.67%
C 7699 6565 138 138 1.79% 2.10%
D 7698 6528 5370 5370 69.76% 82.26%

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 109506 602.82 737 719 180.5
A 3 254 49045 267.79 737 719 180.5
A 3 14 25099 135.1 737 719 180.5
B 4 236 189615 1200.49 737 711 157.4
B 5 185 82979 522.82 737 711 157.4
B 5 236 82003 516.61 737 711 157.4
C 5 250 668015 3334.3 720 712 200.1
C 14 254 116129 576.7 720 712 200.1
C 6 223 63213 312.3 720 712 200.1
D 12 1 11828650 155954.16 260 248 75.8
D 12 110 1681369 22165.11 260 248 75.8
D 2 31 691876 9118.92 260 248 75.8

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