ASTROSAT CZTI

Data Quality Report

Orbit 36773

Creation date: 2024-06-27T21:31:28.245730
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_9000005240_36773cztM0_level2.evt modeM0/AS1A11_087T05_9000005240_36773cztM0_level2_quad_clean.evt
Size (bytes)637,041,60055,477,440
Size607.5 MB 52.9 MB
Events in quadrant A2,842,719334,302
Events in quadrant B9,147,530288,361
Events in quadrant C3,426,576328,573
Events in quadrant D3,479,287318,604

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121003
B0311612
C0136952
D0142752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A585480.136659%
B5854265645.370687%
C5854861.469081%
D58541302.220704%

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 7167 5855 3 3 0.04% 0.05%
B 7167 5854 2434 2434 33.96% 41.58%
C 7167 5855 73 73 1.02% 1.25%
D 7167 5855 108 108 1.51% 1.84%

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 222119 1630.41 668 654 135.8
A 9 143 19568 139.24 668 654 135.8
A 13 6 10704 73.99 668 654 135.8
B 12 1 6803729 68298.8 520 507 99.6
B 5 200 112950 1128.84 520 507 99.6
B 0 213 28235 278.37 520 507 99.6
C 0 207 420416 2768.03 647 650 151.6
C 15 214 249554 1641.33 647 650 151.6
C 12 249 125405 822.66 647 650 151.6
D 13 249 613839 3831.07 649 631 160.1
D 2 250 95961 595.58 649 631 160.1
D 13 171 91859 569.95 649 631 160.1

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