ASTROSAT CZTI

Data Quality Report

Orbit 35586

Creation date: 2022-04-28T14:37:21.739140
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_071T01_9000005096_35586cztM0_level2.evt modeM0/AS1A10_071T01_9000005096_35586cztM0_level2_quad_clean.evt
Size (bytes)501,842,88071,006,400
Size478.6 MB 67.7 MB
Events in quadrant A3,082,692438,180
Events in quadrant B4,564,370413,177
Events in quadrant C3,559,659436,108
Events in quadrant D3,558,141416,890

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131143
B0177252
C0141562
D0147652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A639070.109546%
B63905478.560250%
C63901151.799687%
D6390891.392801%

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 9049 6392 1 1 0.01% 0.02%
B 9049 6392 371 371 4.10% 5.80%
C 9049 6392 92 92 1.02% 1.44%
D 9049 6392 67 67 0.74% 1.05%

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 148440 981.7 744 729 150.5
A 15 169 49511 324.21 744 729 150.5
A 13 6 12559 78.62 744 729 150.5
B 5 172 1650127 12109.88 714 694 136.2
B 4 232 76205 554.39 714 694 136.2
B 12 111 18010 127.13 714 694 136.2
C 0 10 421487 2481.81 720 724 169.5
C 15 214 264001 1552.9 720 724 169.5
C 9 69 51949 302.14 720 724 169.5
D 7 80 299504 1670.04 720 698 178.9
D 13 249 118421 657.96 720 698 178.9
D 8 195 91331 506.55 720 698 178.9

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