ASTROSAT CZTI

Data Quality Report

Orbit 19616

Creation date: 2024-06-27T18:04:49.356096
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/AS1T03_116T01_9000002916_19616cztM0_level2.evt modeM0/AS1T03_116T01_9000002916_19616cztM0_level2_quad_clean.evt
Size (bytes)526,374,72075,447,360
Size502.0 MB 72.0 MB
Events in quadrant A3,364,748461,725
Events in quadrant B3,521,897466,495
Events in quadrant C3,301,674447,795
Events in quadrant D5,288,512431,333

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143311
B0145881
C0140691
D0205181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68401592.324561%
B68411722.514252%
C68411432.090338%
D68412223.245140%

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 7350 6840 1 1 0.01% 0.01%
B 7351 6841 20 20 0.27% 0.29%
C 7351 6841 0 0 0.00% 0.00%
D 7351 6841 75 75 1.02% 1.10%

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 11 47 82559 472.89 850 831 172.8
A 5 16 11158 59.75 850 831 172.8
A 0 226 7121 36.4 850 831 172.8
B 7 220 118833 716.44 842 820 164.7
B 0 198 34561 204.84 842 820 164.7
B 10 247 32075 189.75 842 820 164.7
C 14 238 123678 639.12 808 812 192.2
C 3 233 24696 124.24 808 812 192.2
C 13 61 5733 25.6 808 812 192.2
D 7 238 1853394 9234.56 818 795 200.6
D 7 96 149583 741.66 818 795 200.6
D 12 218 128466 636.4 818 795 200.6

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