ASTROSAT CZTI

Data Quality Report

Orbit 58377

Creation date: 2026-07-13T03:09:10.224317
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_045T01_9000006590_58377cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58377cztM0_level2_quad_clean.evt
Size (bytes)542,240,64093,326,400
Size517.1 MB 89.0 MB
Events in quadrant A3,866,221633,229
Events in quadrant B8,243,436552,169
Events in quadrant C3,666,147602,060
Events in quadrant D3,777,785573,368

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163111
B0290901
C0157301
D0158871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66731732.592537%
B6673160824.097108%
C66731802.697437%
D66731181.768320%

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 7603 6674 162 162 2.13% 2.43%
B 7603 6673 1298 1298 17.07% 19.45%
C 7603 6674 162 162 2.13% 2.43%
D 7603 6674 116 116 1.53% 1.74%

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 618229 3454.18 716 696 178.8
A 4 249 136560 759.96 716 696 178.8
A 12 80 110794 615.83 716 696 178.8
B 5 172 2647114 18605.99 662 639 142.2
B 6 255 1340819 9422.11 662 639 142.2
B 8 128 641641 4506.55 662 639 142.2
C 6 223 420631 2177.03 695 690 192.9
C 4 5 385892 1996.94 695 690 192.9
C 14 254 29920 151.53 695 690 192.9
D 11 129 319927 1609.06 692 660 198.4
D 2 249 197064 989.85 692 660 198.4
D 2 153 152394 764.72 692 660 198.4

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