ASTROSAT CZTI

Data Quality Report

Orbit 45151

Creation date: 2024-06-27T23:09:57.998367
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/AS1A13_049T04_9000006048_45151cztM0_level2.fits modeM0/AS1A13_049T04_9000006048_45151cztM0_level2_quad_clean.evt
Size (bytes)2,551,014,720392,820,480
Size2.4 GB 374.6 MB
Events in quadrant A40,103,6811,819,231
Events in quadrant B14,188,0612,945,468
Events in quadrant C12,682,9622,853,510
Events in quadrant D25,343,4072,392,240

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01387349
B0611784
C0576114
D09433019

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05560
B05560
C05560
D05560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27362990836.210803%
B273646042.207280%
C273652460.898959%
D27362295210.788685%

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 29824 27368 7103 7103 23.82% 25.95%
B 29824 27368 287 287 0.96% 1.05%
C 29825 27369 108 108 0.36% 0.39%
D 29825 27365 2419 2419 8.11% 8.84%

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 15 223 21837511 42483.22 2490 2432 514.0
A 10 83 8169256 15889.71 2490 2432 514.0
A 15 174 171456 328.86 2490 2432 514.0
B 4 170 666630 1128.76 3017 2919 588.0
B 5 32 359407 606.27 3017 2919 588.0
B 5 172 308302 519.36 3017 2919 588.0
C 14 254 327844 466.52 2984 3005 696.3
C 12 2 205597 290.96 2984 3005 696.3
C 15 208 201843 285.56 2984 3005 696.3
D 13 249 4209462 5855.78 2851 2767 718.4
D 11 241 3601789 5009.89 2851 2767 718.4
D 5 235 1866879 2594.87 2851 2767 718.4

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