ASTROSAT CZTI

Data Quality Report

Orbit 59050

Creation date: 2026-08-28T02:46:42.901023
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_004T02_9000006600_59050cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59050cztM0_level2_quad_clean.evt
Size (bytes)960,629,76076,449,600
Size916.1 MB 72.9 MB
Events in quadrant A3,536,359673,804
Events in quadrant B3,591,916718,740
Events in quadrant C12,572,128379,301
Events in quadrant D15,350,71984,377

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149742
B0151772
C0418714
D0501052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65721051.597687%
B65721352.054169%
C6571307746.826967%
D6571571586.973063%

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 7772 6573 51 51 0.66% 0.78%
B 7772 6573 29 29 0.37% 0.44%
C 7771 6571 3003 3003 38.64% 45.70%
D 7770 6570 5242 5242 67.46% 79.79%

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 3 244 265323 1456.79 741 723 181.6
A 14 238 143942 788.51 741 723 181.6
A 3 245 139641 764.83 741 723 181.6
B 5 236 250532 1585.65 735 707 157.6
B 2 249 187049 1182.72 735 707 157.6
B 4 236 78934 496.51 735 707 157.6
C 15 219 8936591 54240.3 596 590 164.7
C 4 5 696579 4224.56 596 590 164.7
C 15 198 171046 1034.64 596 590 164.7
D 12 1 13309784 210786.78 215 204 63.1
D 2 62 599454 9490.46 215 204 63.1
D 6 239 431587 6831.91 215 204 63.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct