ASTROSAT CZTI

Data Quality Report

Orbit 34752

Creation date: 2022-03-03T12:09:13.857946
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/AS1C07_004T01_9000004990_34752cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34752cztM0_level2_quad_clean.evt
Size (bytes)679,118,40067,904,640
Size647.7 MB 64.8 MB
Events in quadrant A2,834,495448,754
Events in quadrant B3,072,071466,596
Events in quadrant C2,912,223457,441
Events in quadrant D11,369,613290,460

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120243
B0127102
C0118652
D0376562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5600591.053571%
B5600240.428571%
C5600160.285714%
D5600313856.035714%

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 8976 5602 40 40 0.45% 0.71%
B 8976 5602 9 9 0.10% 0.16%
C 8976 5602 14 14 0.16% 0.25%
D 8976 5602 3203 3203 35.68% 57.18%

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 15 174 166278 1246.5 658 646 132.9
A 10 83 49460 367.36 658 646 132.9
A 13 6 19357 140.81 658 646 132.9
B 0 190 214664 1667.83 664 647 128.3
B 4 232 86621 669.99 664 647 128.3
B 5 172 79270 612.71 664 647 128.3
C 15 214 237822 1564.94 649 656 151.5
C 0 10 93861 615.01 649 656 151.5
C 14 67 37691 244.37 649 656 151.5
D 1 52 7988731 63771.33 515 501 125.3
D 8 195 593724 4735.8 515 501 125.3
D 14 52 336440 2681.86 515 501 125.3

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