ASTROSAT CZTI

Data Quality Report

Orbit 50216

Creation date: 2025-01-09T18:01:30.076115
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/AS1C09_003T01_9000006442_50216cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50216cztM0_level2_quad_clean.evt
Size (bytes)960,946,56065,269,440
Size916.4 MB 62.2 MB
Events in quadrant A5,576,754578,613
Events in quadrant B4,282,431646,825
Events in quadrant C13,073,764170,348
Events in quadrant D12,157,409146,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209001
B0169271
C0430761
D0403631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62145038.094625%
B62142614.200193%
C6215460074.014481%
D6215475976.572808%

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 7344 6214 345 345 4.70% 5.55%
B 7344 6214 152 152 2.07% 2.45%
C 7344 6214 4126 4126 56.18% 66.40%
D 7344 6214 3659 3659 49.82% 58.88%

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 11 7 821170 5091.49 654 637 161.2
A 12 250 596697 3698.62 654 637 161.2
A 4 156 454487 2816.19 654 637 161.2
B 4 206 962153 6930.08 656 635 138.7
B 5 172 210581 1513.17 656 635 138.7
B 0 155 88217 631.24 656 635 138.7
C 4 111 7319798 74922.2 347 345 97.7
C 15 197 1918531 19634.62 347 345 97.7
C 15 182 766899 7846.48 347 345 97.7
D 7 61 6700768 77023.9 297 287 87.0
D 15 108 1024179 11769.92 297 287 87.0
D 7 45 719376 8266.13 297 287 87.0

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