ASTROSAT CZTI

Data Quality Report

Orbit 25821

Creation date: 2024-06-27T19:21:47.906081
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/AS1A07_068T01_9000003756_25821cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25821cztM0_level2_quad_clean.evt
Size (bytes)608,731,20095,944,320
Size580.5 MB 91.5 MB
Events in quadrant A3,271,251670,153
Events in quadrant B3,331,102663,033
Events in quadrant C3,082,583615,109
Events in quadrant D8,344,674538,733

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135610
B0137770
C0129530
D0286220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5988631.052104%
B5988731.219105%
C5988871.452906%
D5989216236.099516%

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 7197 5987 0 0 0.00% 0.00%
B 7197 5987 6 6 0.08% 0.10%
C 7197 5987 0 0 0.00% 0.00%
D 7198 5988 2112 2112 29.34% 35.27%

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 0 13 188410 1176.98 799 788 159.4
A 13 254 7994 45.2 799 788 159.4
A 0 226 7080 39.47 799 788 159.4
B 15 33 229301 1544.51 779 761 148.0
B 0 219 32121 211.94 779 761 148.0
B 12 111 17213 111.19 779 761 148.0
C 14 238 119499 699.46 738 745 169.8
C 3 233 53144 308.63 738 745 169.8
C 4 175 17623 99.41 738 745 169.8
D 7 223 5490717 40626.76 565 551 135.1
D 1 52 429468 3173.95 565 551 135.1
D 12 233 108037 795.38 565 551 135.1

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