ASTROSAT CZTI

Data Quality Report

Orbit 59404

Creation date: 2026-09-20T04:26:12.030533
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_59404cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59404cztM0_level2_quad_clean.evt
Size (bytes)593,288,640113,446,080
Size565.8 MB 108.2 MB
Events in quadrant A4,208,386747,113
Events in quadrant B4,261,098824,709
Events in quadrant C3,863,973739,445
Events in quadrant D9,010,589571,004

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186101
B0184071
C0173701
D0324142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79542142.690470%
B79551842.313011%
C7955630.791955%
D7954157019.738496%

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 8136 8022 115 115 1.41% 1.43%
B 8137 8023 53 53 0.65% 0.66%
C 8137 8023 32 32 0.39% 0.40%
D 8136 8022 1133 1133 13.93% 14.12%

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 621541 2850.59 886 863 217.7
A 13 248 63767 288.9 886 863 217.7
A 14 238 35944 161.12 886 863 217.7
B 6 255 361251 1879.48 888 855 191.8
B 4 236 173675 901.26 888 855 191.8
B 0 186 76327 393.59 888 855 191.8
C 6 223 137782 565.28 884 876 242.2
C 4 5 62232 253.33 884 876 242.2
C 2 12 44258 179.12 884 876 242.2
D 12 110 3133496 13610.62 820 786 230.2
D 13 138 2424510 10530.3 820 786 230.2
D 2 31 133241 575.47 820 786 230.2

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