ASTROSAT CZTI

Data Quality Report

Orbit 56328

Creation date: 2026-02-25T08:44:26.822221
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_049T01_9000006552_56328cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56328cztM0_level2_quad_clean.evt
Size (bytes)1,093,824,00059,866,560
Size1.0 GB 57.1 MB
Events in quadrant A16,555,32765,974
Events in quadrant B4,404,935662,776
Events in quadrant C3,760,242608,177
Events in quadrant D15,242,8642,067

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0538561
B0178591
C0161911
D0500314

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6799625992.057656%
B68003194.691176%
C6800731.073529%
D6799678299.749963%

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 7729 6800 6095 6095 78.86% 89.63%
B 7730 6801 198 198 2.56% 2.91%
C 7730 6801 56 56 0.72% 0.82%
D 7728 6798 4750 4750 61.46% 69.87%

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 11 31 11261248 100325.15 444 432 112.2
A 4 95 2662303 23715.21 444 432 112.2
A 9 239 180212 1601.7 444 432 112.2
B 0 231 693679 4708.76 691 667 147.2
B 5 185 623698 4233.27 691 667 147.2
B 8 128 75142 506.03 691 667 147.2
C 12 252 292900 1536.12 686 682 190.2
C 15 198 238878 1252.14 686 682 190.2
C 15 230 170102 890.6 686 682 190.2
D 8 129 13627789 413240.57 104 99 33.0
D 12 3 789735 23944.6 104 99 33.0
D 2 249 126642 3837.24 104 99 33.0

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