ASTROSAT CZTI

Data Quality Report

Orbit 29494

Creation date: 2024-06-27T20:04:41.647690
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/AS1A10_064T03_9000004246_29494cztM0_level2.evt modeM0/AS1A10_064T03_9000004246_29494cztM0_level2_quad_clean.evt
Size (bytes)1,523,465,280173,450,880
Size1.4 GB 165.4 MB
Events in quadrant A5,852,6201,201,899
Events in quadrant B6,141,0171,212,632
Events in quadrant C7,212,2681,128,947
Events in quadrant D26,086,619839,218

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255953
B0263343
C0293273
D08613410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12556690.549538%
B125561120.892004%
C125565164.109589%
D12555755560.175229%

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 14066 12558 0 0 0.00% 0.00%
B 14066 12558 9 9 0.06% 0.07%
C 14066 12558 55 55 0.39% 0.44%
D 14065 12556 7016 7016 49.88% 55.88%

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 13 254 24270 74.95 1510 1477 304.1
A 14 239 20710 63.24 1510 1477 304.1
A 3 137 14790 43.78 1510 1477 304.1
B 0 190 111426 384.98 1498 1459 285.6
B 5 172 55780 190.17 1498 1459 285.6
B 15 33 39739 134.01 1498 1459 285.6
C 3 233 991807 3020.57 1418 1429 327.9
C 14 238 334965 1017.26 1418 1429 327.9
C 7 247 179799 544.01 1418 1429 327.9
D 8 195 10964009 40331.04 1147 1115 271.8
D 12 33 4182053 15381.12 1147 1115 271.8
D 1 52 3664448 13476.92 1147 1115 271.8

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