ASTROSAT CZTI

Data Quality Report

Orbit 20508

Creation date: 2024-06-27T18:16:09.261119
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/AS1A05_115T01_9000003030_20508cztM0_level2.evt modeM0/AS1A05_115T01_9000003030_20508cztM0_level2_quad_clean.evt
Size (bytes)604,281,60081,668,160
Size576.3 MB 77.9 MB
Events in quadrant A2,954,495555,911
Events in quadrant B3,266,596561,779
Events in quadrant C2,938,212533,844
Events in quadrant D8,737,099403,872

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126461
B0135591
C0125552
D0299731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5963270.452792%
B5964330.553320%
C5963580.972665%
D5963220036.894181%

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 7188 5964 2 2 0.03% 0.03%
B 7189 5964 4 4 0.06% 0.07%
C 7188 5963 1 1 0.01% 0.02%
D 7188 5963 2335 2335 32.48% 39.16%

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 5 16 36202 235.39 743 727 150.7
A 12 96 25919 167.16 743 727 150.7
A 12 16 13853 87.1 743 727 150.7
B 0 189 131145 937.23 745 727 139.2
B 0 219 72600 516.51 745 727 139.2
B 0 190 45905 324.67 745 727 139.2
C 14 238 112691 669.15 715 720 167.3
C 3 9 20820 120.12 715 720 167.3
C 3 233 8518 46.6 715 720 167.3
D 2 16 4607997 29356.97 643 623 156.9
D 5 222 426652 2714.54 643 623 156.9
D 7 238 297717 1893.0 643 623 156.9

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