ASTROSAT CZTI

Data Quality Report

Orbit 35632

Creation date: 2022-05-10T12:31:20.461003
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/AS1A11_106T01_9000005102_35632cztM0_level2.evt modeM0/AS1A11_106T01_9000005102_35632cztM0_level2_quad_clean.evt
Size (bytes)788,160,96058,530,240
Size751.6 MB 55.8 MB
Events in quadrant A13,696,918215,352
Events in quadrant B3,539,620391,323
Events in quadrant C3,307,130392,241
Events in quadrant D2,940,169373,696

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044812323
B01414841
C01309544
D01224136

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56705670100.000000%
B57012384.174706%
C56981723.018603%
D5691160.281146%

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 7208 5713 5369 5369 74.49% 93.98%
B 7208 5712 153 153 2.12% 2.68%
C 7208 5711 125 125 1.73% 2.19%
D 7208 5709 11 11 0.15% 0.19%

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 11969995 139268.29 422 412 85.9
A 10 83 82113 950.61 422 412 85.9
A 10 248 8377 92.67 422 412 85.9
B 5 172 924382 7196.15 654 636 128.4
B 0 189 37365 286.13 654 636 128.4
B 12 111 16214 121.36 654 636 128.4
C 0 10 566285 3761.07 639 643 150.4
C 15 214 236820 1570.39 639 643 150.4
C 14 67 7669 46.71 639 643 150.4
D 1 52 259480 1625.87 647 628 159.2
D 14 52 55161 342.53 647 628 159.2
D 2 153 38689 239.06 647 628 159.2

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