ASTROSAT CZTI

Data Quality Report

Orbit 35738

Creation date: 2022-05-13T10:38:56.466784
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/AS1A09_029T06_9000005126_35738cztM0_level2.evt modeM0/AS1A09_029T06_9000005126_35738cztM0_level2_quad_clean.evt
Size (bytes)259,300,80034,588,800
Size247.3 MB 33.0 MB
Events in quadrant A1,330,413226,408
Events in quadrant B1,419,231227,052
Events in quadrant C1,482,882211,794
Events in quadrant D3,443,239195,985

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05928371
B06171398
C06305381
D0132401204

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0542
B0564
C0542
D0564

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A259640.154083%
B2598170.654349%
C2607572.186421%
D255236814.420063%

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 5143 2630 0 0 0.00% 0.00%
B 5141 2633 8 8 0.16% 0.30%
C 5148 2631 50 50 0.97% 1.90%
D 5147 2587 487 487 9.46% 18.82%

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 10 83 71153 1081.14 321 316 65.5
A 13 6 5881 84.94 321 316 65.5
A 8 144 4283 60.55 321 316 65.5
B 5 172 99603 1605.88 316 309 61.8
B 10 245 34894 559.34 316 309 61.8
B 5 255 20886 332.79 316 309 61.8
C 0 10 143893 2031.53 301 302 70.7
C 15 214 109528 1545.33 301 302 70.7
C 15 208 34459 483.25 301 302 70.7
D 1 52 1595432 21897.57 292 284 72.8
D 14 52 453953 6227.79 292 284 72.8
D 12 17 114185 1563.59 292 284 72.8

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