ASTROSAT CZTI

Data Quality Report

Orbit 38832

Creation date: 2024-06-27T21:57:35.254004
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/AS1A12_083T07_9000005406_38832cztM0_level2.fits modeM0/AS1A12_083T07_9000005406_38832cztM0_level2_quad_clean.evt
Size (bytes)683,078,400175,561,920
Size651.4 MB 167.4 MB
Events in quadrant A5,678,6581,197,665
Events in quadrant B6,502,9081,168,353
Events in quadrant C5,457,8551,143,736
Events in quadrant D6,804,1931,054,207

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234034
B0265053
C0228473
D0274243

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10853280.257993%
B108534654.284530%
C10853680.626555%
D108533062.819497%

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 13660 10855 11 11 0.08% 0.10%
B 13660 10855 316 316 2.31% 2.91%
C 13660 10855 61 61 0.45% 0.56%
D 13660 10855 246 246 1.80% 2.27%

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 10 83 770530 3073.08 1229 1203 250.3
A 13 248 73682 289.52 1229 1203 250.3
A 9 143 57235 223.82 1229 1203 250.3
B 5 184 1182451 5081.98 1201 1166 232.4
B 4 81 185358 792.41 1201 1166 232.4
B 5 200 157894 674.26 1201 1166 232.4
C 15 214 442395 1580.83 1191 1196 279.1
C 15 208 277014 988.26 1191 1196 279.1
C 1 23 64926 228.35 1191 1196 279.1
D 2 249 598586 2072.48 1184 1153 288.3
D 10 118 420118 1453.38 1184 1153 288.3
D 12 235 346360 1197.52 1184 1153 288.3

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