ASTROSAT CZTI

Data Quality Report

Orbit 41603

Creation date: 2024-06-27T22:30:36.073048
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/AS1A12_035T02_9000005680_41603cztM0_level2.fits modeM0/AS1A12_035T02_9000005680_41603cztM0_level2_quad_clean.evt
Size (bytes)344,808,00093,003,840
Size328.8 MB 88.7 MB
Events in quadrant A2,976,227638,631
Events in quadrant B2,552,398652,360
Events in quadrant C3,659,147591,438
Events in quadrant D3,165,123564,514

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120192
B0109652
C0143632
D0130392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5274220.417141%
B5274160.303375%
C52742184.133485%
D52741562.957907%

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 7156 5275 5 5 0.07% 0.09%
B 7156 5275 4 4 0.06% 0.08%
C 7156 5275 203 203 2.84% 3.85%
D 7156 5275 124 124 1.73% 2.35%

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 10 83 557565 4385.85 616 603 127.0
A 2 79 17658 134.3 616 603 127.0
A 13 248 10345 76.71 616 603 127.0
B 0 245 59033 505.46 608 591 115.6
B 0 186 47099 402.24 608 591 115.6
B 5 255 22928 193.19 608 591 115.6
C 0 15 671740 5019.76 576 580 133.7
C 0 10 511121 3818.45 576 580 133.7
C 15 214 227417 1696.57 576 580 133.7
D 13 249 336827 2325.68 591 576 144.6
D 12 218 232872 1606.68 591 576 144.6
D 1 47 184945 1275.19 591 576 144.6

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