ASTROSAT CZTI

Data Quality Report

Orbit 54292

Creation date: 2025-10-11T06:25:24.318819
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_126T15_9000006516_54292cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54292cztM0_level2_quad_clean.evt
Size (bytes)1,651,256,640252,826,560
Size1.5 GB 241.1 MB
Events in quadrant A10,308,5231,733,942
Events in quadrant B10,299,9281,906,148
Events in quadrant C12,010,7181,585,950
Events in quadrant D27,020,2401,104,770

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03890
B03890
C03890
D03900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045390140
B044504126
C050489301
D094040698

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192277343.817548%
B192302551.326053%
C1919612576.548239%
D19162567829.631562%

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 20309 19284 541 541 2.66% 2.81%
B 20310 19287 100 100 0.49% 0.52%
C 20310 19274 1250 1250 6.15% 6.49%
D 20309 19283 5745 5745 28.29% 29.79%

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 7 29 1185241 2396.48 1994 1942 493.8
A 3 130 536459 1082.53 1994 1942 493.8
A 15 174 228488 458.81 1994 1942 493.8
B 7 0 921880 2168.13 1997 1923 424.3
B 10 247 368724 864.47 1997 1923 424.3
B 5 172 250204 585.14 1997 1923 424.3
C 1 241 2556562 4858.15 1917 1895 525.9
C 14 254 746298 1415.61 1917 1895 525.9
C 12 249 649728 1231.97 1917 1895 525.9
D 8 176 16973721 34604.48 1718 1637 490.5
D 2 153 1379099 2808.52 1718 1637 490.5
D 2 172 878989 1788.84 1718 1637 490.5

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