ASTROSAT CZTI

Data Quality Report

Orbit 30994

Creation date: 2024-06-27T20:22:03.682001
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/AS1A10_071T48_9000004478_30994cztM0_level2.evt modeM0/AS1A10_071T48_9000004478_30994cztM0_level2_quad_clean.evt
Size (bytes)580,561,92077,489,280
Size553.7 MB 73.9 MB
Events in quadrant A3,374,913484,198
Events in quadrant B5,375,117485,198
Events in quadrant C4,061,393451,156
Events in quadrant D4,306,054447,123

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141773
B0209093
C0162303
D0173023

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6867560.815494%
B68671311.907674%
C68662483.612001%
D68661211.762307%

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 7652 6867 0 0 0.00% 0.00%
B 7652 6867 5 5 0.07% 0.07%
C 7651 6866 81 81 1.06% 1.18%
D 7651 6868 84 84 1.10% 1.22%

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 11 47 23159 127.15 868 849 175.5
A 13 254 12473 66.25 868 849 175.5
A 3 137 8580 44.06 868 849 175.5
B 6 159 1887029 11320.4 860 838 166.6
B 0 190 32749 191.52 860 838 166.6
B 0 230 27688 161.15 860 838 166.6
C 0 10 623036 3226.84 816 824 192.8
C 14 238 134000 690.66 816 824 192.8
C 3 233 85696 440.15 816 824 192.8
D 13 174 447190 2280.15 824 803 195.8
D 8 195 246093 1252.94 824 803 195.8
D 1 239 234206 1192.22 824 803 195.8

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