ASTROSAT CZTI

Data Quality Report

Orbit 58746

Creation date: 2026-08-06T22:11:35.159446
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_106T01_9000006596_58746cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58746cztM0_level2_quad_clean.evt
Size (bytes)683,386,56077,656,320
Size651.7 MB 74.1 MB
Events in quadrant A3,297,904603,815
Events in quadrant B3,653,201642,714
Events in quadrant C4,012,368568,250
Events in quadrant D13,863,075113,921

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138841
B0150671
C0161561
D0453773

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60471993.290888%
B60471752.893997%
C60482864.728836%
D6047498682.454109%

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 7167 6048 91 91 1.27% 1.50%
B 7167 6048 51 51 0.71% 0.84%
C 7168 6048 230 230 3.21% 3.80%
D 7167 6048 4444 4444 62.01% 73.48%

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 254754 1504.97 678 661 168.8
A 15 233 189839 1120.49 678 661 168.8
A 12 114 40093 233.55 678 661 168.8
B 0 171 436750 3098.33 666 644 140.8
B 8 234 153458 1085.67 666 644 140.8
B 7 252 89680 632.56 666 644 140.8
C 13 3 374279 2067.33 655 650 180.7
C 12 252 356589 1969.45 655 650 180.7
C 12 254 282346 1558.65 655 650 180.7
D 11 129 10441786 113100.86 324 308 92.3
D 15 142 1886188 20427.63 324 308 92.3
D 2 249 94065 1015.56 324 308 92.3

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