ASTROSAT CZTI

Data Quality Report

Orbit 56544

Creation date: 2026-03-11T19:44:28.042489
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_060T01_9000006556_56544cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56544cztM0_level2_quad_clean.evt
Size (bytes)1,162,802,880217,586,880
Size1.1 GB 207.5 MB
Events in quadrant A7,563,2851,471,103
Events in quadrant B14,626,0061,372,338
Events in quadrant C10,563,3601,347,741
Events in quadrant D9,058,5951,299,236

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341481
B0542473
C0428161
D0381041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159121941.219206%
B15911239715.065049%
C1591110776.768902%
D159124552.859477%

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 16142 15915 35 35 0.22% 0.22%
B 16141 15914 1556 1556 9.64% 9.78%
C 16141 15914 891 891 5.52% 5.60%
D 16142 15915 364 364 2.25% 2.29%

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 4 249 223990 516.46 1739 1697 430.4
A 8 206 141025 323.7 1739 1697 430.4
A 10 251 98042 223.84 1739 1697 430.4
B 4 206 5176226 14946.33 1627 1568 346.2
B 5 185 1940146 5599.33 1627 1568 346.2
B 4 171 294508 846.12 1627 1568 346.2
C 15 230 2704154 5986.79 1650 1634 451.4
C 12 252 506296 1117.96 1650 1634 451.4
C 13 3 479693 1059.02 1650 1634 451.4
D 2 249 987084 2079.42 1670 1593 473.9
D 8 240 373376 784.48 1670 1593 473.9
D 8 129 296558 622.39 1670 1593 473.9

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