ASTROSAT CZTI

Data Quality Report

Orbit 20238

Creation date: 2024-06-27T18:12:51.405480
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/AS1T03_123T01_9000003000_20238cztM0_level2.evt modeM0/AS1T03_123T01_9000003000_20238cztM0_level2_quad_clean.evt
Size (bytes)543,836,16081,429,120
Size518.6 MB 77.7 MB
Events in quadrant A3,706,732503,018
Events in quadrant B3,842,446506,308
Events in quadrant C3,708,220476,839
Events in quadrant D4,720,270474,003

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153292
B0156292
C0153182
D0186642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72531822.509306%
B72542102.894955%
C72542092.881169%
D72542463.391232%

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 9208 7256 2 2 0.02% 0.03%
B 9209 7257 1 1 0.01% 0.01%
C 9209 7257 1 1 0.01% 0.01%
D 9209 7257 105 105 1.14% 1.45%

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 4 2 21028 104.51 953 931 192.3
A 3 1 15419 75.34 953 931 192.3
A 0 226 8094 37.25 953 931 192.3
B 10 245 66823 361.46 942 920 182.3
B 0 214 55521 299.47 942 920 182.3
B 12 111 23000 121.1 942 920 182.3
C 14 238 139990 658.38 899 906 211.3
C 3 233 49397 229.54 899 906 211.3
C 9 54 12313 54.0 899 906 211.3
D 7 238 488676 2176.85 920 895 224.1
D 5 222 311936 1388.1 920 895 224.1
D 1 52 254874 1133.45 920 895 224.1

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