ASTROSAT CZTI

Data Quality Report

Orbit 08886

Creation date: 2024-06-27T15:38:25.875757
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/AS1A03_065T01_9000001238_08886cztM0_level2.evt modeM0/AS1A03_065T01_9000001238_08886cztM0_level2_quad_clean.evt
Size (bytes)218,632,32037,560,960
Size208.5 MB 35.8 MB
Events in quadrant A1,646,455235,408
Events in quadrant B1,523,660237,882
Events in quadrant C1,458,751229,529
Events in quadrant D1,787,206220,814

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06882174
B06495146
C06265116
D07238106

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2974240.806994%
B297970.234978%
C298740.133914%
D2995130.434057%

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 3040 3036 12 12 0.39% 0.40%
B 3040 3036 2 2 0.07% 0.07%
C 3040 3036 0 0 0.00% 0.00%
D 3040 3038 2 2 0.07% 0.07%

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 8 5 78762 984.21 394 386 79.6
A 15 174 46333 576.98 394 386 79.6
A 5 16 7021 83.32 394 386 79.6
B 10 252 12743 165.74 389 382 74.6
B 12 111 7882 100.57 389 382 74.6
B 11 111 6463 81.54 389 382 74.6
C 13 61 2927 29.15 374 376 87.5
C 12 4 1009 7.23 374 376 87.5
C 3 202 940 6.44 374 376 87.5
D 8 195 224027 2392.0 379 370 93.5
D 2 14 37933 401.73 379 370 93.5
D 2 136 29364 310.09 379 370 93.5

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