ASTROSAT CZTI

Data Quality Report

Orbit 54394

Creation date: 2025-10-18T04:07:34.359494
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_126T19_9000006518_54394cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54394cztM0_level2_quad_clean.evt
Size (bytes)2,062,100,160231,822,720
Size1.9 GB 221.1 MB
Events in quadrant A9,323,6771,770,608
Events in quadrant B11,097,5241,767,504
Events in quadrant C12,905,0891,625,238
Events in quadrant D41,513,525525,895

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421423
B0471423
C0524433
D013665510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192953892.016066%
B1929512076.255507%
C192958984.654055%
D192941351670.052866%

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 20450 19297 155 155 0.76% 0.80%
B 20450 19298 754 754 3.69% 3.91%
C 20450 19298 668 668 3.27% 3.46%
D 20448 19294 12608 12608 61.66% 65.35%

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 12 15 1041652 2037.58 2067 2017 510.2
A 7 206 67272 127.89 2067 2017 510.2
A 4 3 58257 110.22 2067 2017 510.2
B 10 14 2386648 5645.54 1992 1919 422.4
B 5 172 183924 430.87 1992 1919 422.4
B 0 213 178556 418.16 1992 1919 422.4
C 9 38 1461656 2720.04 1983 1965 536.6
C 1 241 1461295 2719.37 1983 1965 536.6
C 14 254 447747 830.69 1983 1965 536.6
D 8 176 33974828 106394.44 1111 1058 319.3
D 2 62 1218239 3811.8 1111 1058 319.3
D 2 172 864864 2705.15 1111 1058 319.3

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