ASTROSAT CZTI

Data Quality Report

Orbit 54297

Creation date: 2025-10-11T13:31:00.079035
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_54297cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54297cztM0_level2_quad_clean.evt
Size (bytes)507,139,20083,920,320
Size483.6 MB 80.0 MB
Events in quadrant A2,679,692601,776
Events in quadrant B2,922,091643,913
Events in quadrant C3,170,060562,700
Events in quadrant D9,527,384308,023

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125811
B0131061
C0141271
D0325701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6079210.345452%
B6080801.315789%
C60801131.858553%
D6080267043.914474%

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 7229 6080 8 8 0.11% 0.13%
B 7230 6081 25 25 0.35% 0.41%
C 7230 6081 103 103 1.42% 1.69%
D 7230 6081 2374 2374 32.84% 39.04%

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 15 174 37748 233.27 641 625 159.1
A 8 246 33252 205.02 641 625 159.1
A 4 3 20851 127.1 641 625 159.1
B 7 0 116841 850.66 633 610 136.6
B 0 213 81362 591.0 633 610 136.6
B 10 247 72710 527.68 633 610 136.6
C 14 254 500507 2956.14 610 603 169.1
C 12 249 214821 1266.76 610 603 169.1
C 1 241 27093 156.65 610 603 169.1
D 8 176 5080731 40876.69 433 414 124.3
D 2 172 2390286 19229.12 433 414 124.3
D 2 153 126329 1013.12 433 414 124.3

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