ASTROSAT CZTI

Data Quality Report

Orbit 36877

Creation date: 2024-06-27T21:32:41.789359
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/AS1A11_075T01_9000005244_36877cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36877cztM0_level2_quad_clean.evt
Size (bytes)660,896,64094,826,880
Size630.3 MB 90.4 MB
Events in quadrant A5,184,847708,662
Events in quadrant B1,673,51412,872
Events in quadrant C5,640,476713,244
Events in quadrant D6,768,373681,045

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223364
B0110943
C0234433
D0276243

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10867170.156437%
B1086710867100.000000%
C10867980.901813%
D108674093.763688%

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 13643 10869 3 3 0.02% 0.03%
B 13642 10866 0 0 0.00% 0.00%
C 13643 10869 75 75 0.55% 0.69%
D 13643 10869 364 364 2.67% 3.35%

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 10 83 423593 1730.39 1208 1182 244.1
A 13 6 35537 140.73 1208 1182 244.1
A 9 143 27506 107.83 1208 1182 244.1
B 12 243 1504177 213712.8 26 25 7.0
B 12 144 28444 4037.83 26 25 7.0
B 5 172 6882 974.26 26 25 7.0
C 15 214 462847 1702.45 1173 1181 271.2
C 15 208 199312 730.63 1173 1181 271.2
C 0 239 130922 478.43 1173 1181 271.2
D 13 249 762816 2669.75 1164 1132 285.3
D 13 171 453917 1587.04 1164 1132 285.3
D 12 233 401115 1401.97 1164 1132 285.3

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