ASTROSAT CZTI

Data Quality Report

Orbit 36928

Creation date: 2024-06-27T21:33:18.263815
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_087T05_9000005248_36928cztM0_level2.evt modeM0/AS1A11_087T05_9000005248_36928cztM0_level2_quad_clean.evt
Size (bytes)348,719,04071,876,160
Size332.6 MB 68.5 MB
Events in quadrant A2,019,498473,318
Events in quadrant B2,598,676484,352
Events in quadrant C2,279,347480,166
Events in quadrant D3,377,145442,622

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086472
B0104131
C091911
D0128401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A419720.047653%
B4197621.477246%
C4197481.143674%
D41973187.576841%

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 6350 4198 0 0 0.00% 0.00%
B 6350 4198 71 71 1.12% 1.69%
C 6350 4198 43 43 0.68% 1.02%
D 6350 4198 336 336 5.29% 8.00%

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 141619 1433.83 484 475 98.4
A 9 143 5562 51.68 484 475 98.4
A 13 254 5361 49.63 484 475 98.4
B 0 182 383478 4066.67 486 474 94.2
B 5 172 208287 2206.52 486 474 94.2
B 0 213 43014 451.68 486 474 94.2
C 0 10 177325 1568.04 483 489 112.8
C 15 214 176219 1558.23 483 489 112.8
C 15 159 14169 121.3 483 489 112.8
D 12 17 1169270 10181.95 468 456 114.8
D 12 233 165779 1440.18 468 456 114.8
D 2 250 124521 1080.77 468 456 114.8

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