ASTROSAT CZTI

Data Quality Report

Orbit 50232

Creation date: 2025-01-10T21:48:17.048352
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_50232cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50232cztM0_level2_quad_clean.evt
Size (bytes)921,185,28075,435,840
Size878.5 MB 71.9 MB
Events in quadrant A4,755,545605,959
Events in quadrant B3,463,939689,580
Events in quadrant C13,916,258211,401
Events in quadrant D11,466,576329,233

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182811
B0147221
C0457141
D0383936

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64234977.737817%
B64231452.257512%
C6424451070.205479%
D6423309148.123930%

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 7548 6424 345 345 4.57% 5.37%
B 7548 6424 63 63 0.83% 0.98%
C 7549 6425 4502 4502 59.64% 70.07%
D 7548 6424 3416 3416 45.26% 53.18%

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 0 98 466317 2691.59 686 669 173.0
A 8 38 288287 1662.52 686 669 173.0
A 8 8 187144 1077.88 686 669 173.0
B 5 32 117628 799.02 691 668 146.4
B 0 213 90904 616.45 691 668 146.4
B 7 252 59270 400.34 691 668 146.4
C 4 111 4148133 33560.37 440 437 123.6
C 15 197 2648725 21428.17 440 437 123.6
C 15 127 2527206 20444.92 440 437 123.6
D 7 61 5425508 36865.38 512 492 147.2
D 15 108 1466014 9958.87 512 492 147.2
D 3 12 754099 5121.09 512 492 147.2

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