ASTROSAT CZTI

Data Quality Report

Orbit 20230801_T05_138T01_9000005802_level2

Creation date: 2023-08-03T12:06:05.055938
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/AS1T05_138T01_9000005802cztM0_level2.fits modeM0/AS1T05_138T01_9000005802cztM0_level2_quad_clean.evt
Size (bytes)95,140,80083,355,840
Size90.7 MB 79.5 MB
Events in quadrant A566,854467,167
Events in quadrant B543,502464,594
Events in quadrant C550,984440,881
Events in quadrant D477,772408,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0490

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231730
B0227890
C0237890
D0273710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10714310.289341%
B107151050.979935%
C107152011.875875%
D107152262.109193%

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 15674 10712 0 0 0.00% 0.00%
B 15675 10715 0 0 0.00% 0.00%
C 15675 10688 0 0 0.00% 0.00%
D 15675 10712 0 0 0.00% 0.00%

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 9 19 495 9.23 148 139 38.6
A 0 29 468 8.53 148 139 38.6
A 7 110 447 7.99 148 139 38.6
B 2 9 457 10.45 144 137 30.6
B 3 80 401 8.62 144 137 30.6
B 3 17 400 8.59 144 137 30.6
C 1 81 452 8.13 145 136 38.9
C 1 80 433 7.64 145 136 38.9
C 3 187 403 6.87 145 136 38.9
D 10 189 369 6.52 136 124 37.6
D 7 3 363 6.36 136 124 37.6
D 10 113 349 5.99 136 124 37.6

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