ASTROSAT CZTI

Data Quality Report

Orbit 51683

Creation date: 2025-04-22T12:01:09.274545
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/AS1A13_031T01_9000006462_51683cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51683cztM0_level2_quad_clean.evt
Size (bytes)270,187,20048,418,560
Size257.7 MB 46.2 MB
Events in quadrant A2,361,995317,522
Events in quadrant B2,061,053354,125
Events in quadrant C3,432,684245,310
Events in quadrant D1,858,599287,673

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093
B0113
C0117
D0114

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153935949
B0143595587
C02332110778
D0162617963

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012231
B012221
C011940
D012343

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37501223.253333%
B38151052.752294%
C339353815.856174%
D3631330.908841%

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 7113 4584 101 101 1.42% 2.20%
B 7113 4664 63 63 0.89% 1.35%
C 7114 4243 543 543 7.63% 12.80%
D 7114 4383 30 30 0.42% 0.68%

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 7 64 387680 3960.05 393 384 97.8
A 13 248 67807 689.39 393 384 97.8
A 3 14 49389 501.07 393 384 97.8
B 10 14 188293 2152.85 398 385 87.3
B 8 128 52355 595.42 398 385 87.3
B 5 173 44083 500.64 398 385 87.3
C 15 189 1590156 17754.05 322 320 89.5
C 13 3 188369 2099.99 322 320 89.5
C 0 192 167005 1861.41 322 320 89.5
D 10 172 197673 1915.52 365 352 103.0
D 6 42 54753 528.1 365 352 103.0
D 5 173 32140 308.59 365 352 103.0

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