ASTROSAT CZTI

Data Quality Report

Orbit 16903

Creation date: 2024-06-27T17:29:17.462497
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_004T03_9000002508_16903cztM0_level2.evt modeM0/AS1A05_004T03_9000002508_16903cztM0_level2_quad_clean.evt
Size (bytes)597,752,64044,153,280
Size570.1 MB 42.1 MB
Events in quadrant A6,799,131206,993
Events in quadrant B3,205,492241,250
Events in quadrant C3,075,060228,768
Events in quadrant D4,594,033216,541

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245522
B0135052
C0130472
D0179372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6336106516.808712%
B6336310.489268%
C6336480.757576%
D63362794.403409%

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 7487 6337 752 752 10.04% 11.87%
B 7487 6338 2 2 0.03% 0.03%
C 7487 6338 0 0 0.00% 0.00%
D 7487 6338 185 185 2.47% 2.92%

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 15 174 3925027 27092.27 724 709 144.9
A 12 189 78452 536.71 724 709 144.9
A 0 226 6373 39.1 724 709 144.9
B 15 35 80898 545.29 773 754 147.0
B 0 219 51356 344.29 773 754 147.0
B 12 111 17004 110.56 773 754 147.0
C 14 238 115280 665.35 742 749 172.1
C 3 233 59481 341.19 742 749 172.1
C 13 61 5195 25.83 742 749 172.1
D 1 52 1570506 8782.94 734 713 178.7
D 12 235 123437 686.64 734 713 178.7
D 2 33 71921 398.41 734 713 178.7

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