ASTROSAT CZTI

Data Quality Report

Orbit 59095

Creation date: 2026-08-30T09:10:34.037860
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_004T02_9000006600_59095cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59095cztM0_level2_quad_clean.evt
Size (bytes)723,453,12081,388,800
Size689.9 MB 77.6 MB
Events in quadrant A3,594,629648,142
Events in quadrant B3,055,733700,167
Events in quadrant C3,461,064621,799
Events in quadrant D16,159,73238,314

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151761
B0136771
C0150922
D0524051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6533881.347008%
B6534701.071319%
C65331612.464411%
D6533615594.213991%

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 7677 6533 28 28 0.36% 0.43%
B 7678 6535 2 2 0.03% 0.03%
C 7677 6533 137 137 1.78% 2.10%
D 7677 6534 5759 5759 75.02% 88.14%

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 508896 2849.41 726 708 178.3
A 5 168 65304 362.19 726 708 178.3
A 15 233 63946 354.58 726 708 178.3
B 5 236 67768 435.76 724 695 153.9
B 0 186 47249 302.45 724 695 153.9
B 4 236 36101 230.03 724 695 153.9
C 14 254 383115 1977.69 705 696 193.4
C 6 223 137867 709.38 705 696 193.4
C 12 252 66678 341.23 705 696 193.4
D 12 1 15016897 288988.71 178 170 52.0
D 6 239 307503 5914.46 178 170 52.0
D 2 62 54597 1047.42 178 170 52.0

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