ASTROSAT CZTI

Data Quality Report

Orbit 19382

Creation date: 2024-06-27T18:02:11.311708
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/AS1A05_025T17_9000002868_19382cztM0_level2.evt modeM0/AS1A05_025T17_9000002868_19382cztM0_level2_quad_clean.evt
Size (bytes)760,746,240124,182,720
Size725.5 MB 118.4 MB
Events in quadrant A3,234,706940,916
Events in quadrant B3,212,861949,598
Events in quadrant C3,088,810889,237
Events in quadrant D13,089,446553,084

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134261
B0133241
C0129651
D0430471

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61021372.245166%
B61031372.244798%
C61031572.572505%
D6103454274.422415%

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 7392 6102 16 16 0.22% 0.26%
B 7393 6103 7 7 0.09% 0.11%
C 7393 6103 0 0 0.00% 0.00%
D 7393 6103 4151 4151 56.15% 68.02%

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 5 16 96254 598.08 808 793 159.6
A 15 174 23839 144.39 808 793 159.6
A 0 226 7069 39.32 808 793 159.6
B 7 220 26124 173.31 802 785 146.2
B 12 111 16224 105.6 802 785 146.2
B 11 111 14003 90.41 802 785 146.2
C 14 238 122068 702.0 758 763 172.8
C 3 233 10062 53.81 758 763 172.8
C 13 61 5559 27.75 758 763 172.8
D 10 66 8143696 64104.03 534 518 127.0
D 7 238 2551454 20081.26 534 518 127.0
D 1 52 326779 2568.36 534 518 127.0

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