ASTROSAT CZTI

Data Quality Report

Orbit 23244

Creation date: 2024-06-27T18:51:44.524538
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/AS1A08_004T02_9000003436_23244cztM0_level2.evt modeM0/AS1A08_004T02_9000003436_23244cztM0_level2_quad_clean.evt
Size (bytes)470,364,480132,177,600
Size448.6 MB 126.1 MB
Events in quadrant A3,139,989918,917
Events in quadrant B3,180,102930,163
Events in quadrant C3,554,436865,515
Events in quadrant D3,948,192854,723

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133531
B0134171
C0147321
D0158061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6222490.787528%
B6223500.803471%
C62232153.454925%
D62231081.735497%

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 7417 6222 0 0 0.00% 0.00%
B 7418 6223 3 3 0.04% 0.05%
C 7418 6223 92 92 1.24% 1.48%
D 7418 6223 55 55 0.74% 0.88%

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 6 16 28142 171.74 806 794 159.2
A 13 254 9710 55.99 806 794 159.2
A 0 226 7214 40.32 806 794 159.2
B 15 32 24463 160.91 797 780 147.2
B 0 228 18412 119.8 797 780 147.2
B 12 111 16763 108.59 797 780 147.2
C 3 233 295892 1708.27 749 754 172.8
C 14 238 122508 704.72 749 754 172.8
C 8 208 105086 603.88 749 754 172.8
D 7 238 423474 2305.45 769 746 183.4
D 1 52 175614 953.69 769 746 183.4
D 12 233 134806 731.13 769 746 183.4

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