ASTROSAT CZTI

Data Quality Report

Orbit 56650

Creation date: 2026-03-18T21:15:05.727158
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/AS1A14_083T06_9000006558_56650cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56650cztM0_level2_quad_clean.evt
Size (bytes)399,355,20086,166,720
Size380.9 MB 82.2 MB
Events in quadrant A2,760,306569,697
Events in quadrant B3,766,140601,233
Events in quadrant C3,113,111539,561
Events in quadrant D4,681,082483,834

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126771
B0152501
C0136971
D0180051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5941951.599057%
B59412203.703080%
C5941801.346575%
D59414297.221007%

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 6981 5942 38 38 0.54% 0.64%
B 6981 5941 130 130 1.86% 2.19%
C 6981 5942 37 37 0.53% 0.62%
D 6981 5941 401 401 5.74% 6.75%

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 8 74350 472.45 634 617 156.1
A 13 248 66455 421.87 634 617 156.1
A 10 251 54588 345.83 634 617 156.1
B 4 21 510834 3854.05 621 601 132.4
B 5 185 389014 2933.88 621 601 132.4
B 8 128 106213 797.74 621 601 132.4
C 12 252 491163 2953.01 606 598 166.1
C 1 16 120395 721.13 606 598 166.1
C 14 254 55841 332.54 606 598 166.1
D 2 62 728917 4340.5 593 566 167.8
D 2 120 688085 4097.17 593 566 167.8
D 2 31 315295 1875.58 593 566 167.8

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