ASTROSAT CZTI

Data Quality Report

Orbit 22838

Creation date: 2024-06-27T18:46:26.989158
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/AS1C05_001T01_9000003374_22838cztM0_level2.evt modeM0/AS1C05_001T01_9000003374_22838cztM0_level2_quad_clean.evt
Size (bytes)740,041,920210,245,760
Size705.8 MB 200.5 MB
Events in quadrant A5,100,9751,433,652
Events in quadrant B5,311,3691,461,395
Events in quadrant C5,096,7281,390,262
Events in quadrant D6,179,8201,343,890

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221030
B0226020
C0219870
D0255190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10666650.609413%
B10668920.862392%
C106681141.068616%
D106681921.799775%

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 12782 10669 0 0 0.00% 0.00%
B 12783 10670 1 1 0.01% 0.01%
C 12783 10670 0 0 0.00% 0.00%
D 12783 10670 125 125 0.98% 1.17%

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 102782 392.95 1295 1268 258.3
A 13 254 18608 67.12 1295 1268 258.3
A 0 226 11154 38.27 1295 1268 258.3
B 0 190 190419 782.88 1293 1261 241.6
B 12 111 28676 113.46 1293 1261 241.6
B 11 111 24937 97.99 1293 1261 241.6
C 14 238 201483 693.81 1253 1264 288.6
C 0 239 9345 28.0 1253 1264 288.6
C 13 61 8816 26.17 1253 1264 288.6
D 1 52 993935 3289.78 1260 1224 301.8
D 12 227 120540 395.41 1260 1224 301.8
D 2 152 91841 300.3 1260 1224 301.8

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