ASTROSAT CZTI

Data Quality Report

Orbit 34484

Creation date: 2022-02-13T03:16:45.086515
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/AS1A10_071T14_9000004924_34484cztM0_level2.evt modeM0/AS1A10_071T14_9000004924_34484cztM0_level2_quad_clean.evt
Size (bytes)520,176,96081,483,840
Size496.1 MB 77.7 MB
Events in quadrant A4,431,998516,619
Events in quadrant B3,597,529538,152
Events in quadrant C2,866,375534,306
Events in quadrant D4,481,922490,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169203
B0143962
C0118042
D0170532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A554461211.038961%
B55444317.774170%
C5544310.559163%
D55443886.998557%

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 7066 5545 436 436 6.17% 7.86%
B 7066 5545 269 269 3.81% 4.85%
C 7066 5545 20 20 0.28% 0.36%
D 7066 5545 356 356 5.04% 6.42%

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 15 169 1983766 15889.45 617 604 124.8
A 10 83 33911 266.86 617 604 124.8
A 9 143 22661 176.72 617 604 124.8
B 5 172 944480 7829.4 624 610 120.6
B 0 229 88121 725.9 624 610 120.6
B 0 189 49175 402.85 624 610 120.6
C 15 214 236698 1605.46 633 639 147.0
C 0 10 109823 742.57 633 639 147.0
C 14 67 19843 130.61 633 639 147.0
D 7 223 997223 6209.14 615 604 160.5
D 8 195 522502 3251.53 615 604 160.5
D 12 218 232331 1443.71 615 604 160.5

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