ASTROSAT CZTI

Data Quality Report

Orbit 54561

Creation date: 2025-10-29T08:27:31.278126
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_127T09_9000006520_54561cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54561cztM0_level2_quad_clean.evt
Size (bytes)454,870,080108,604,800
Size433.8 MB 103.6 MB
Events in quadrant A3,892,062711,459
Events in quadrant B4,255,734758,693
Events in quadrant C3,645,571688,163
Events in quadrant D4,476,581622,194

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168082
B0179332
C0160882
D0187492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73002233.054795%
B73012923.999452%
C7300871.191781%
D73003244.438356%

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 9571 7302 120 120 1.25% 1.64%
B 9571 7302 89 89 0.93% 1.22%
C 9570 7301 32 32 0.33% 0.44%
D 9570 7301 238 238 2.49% 3.26%

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 3 476087 2376.09 810 791 200.0
A 3 14 133045 661.16 810 791 200.0
A 4 3 57409 283.04 810 791 200.0
B 10 14 310320 1795.07 803 774 172.4
B 0 213 180723 1043.53 803 774 172.4
B 1 207 172937 998.38 803 774 172.4
C 13 3 163161 732.92 798 788 221.5
C 12 252 109066 488.74 798 788 221.5
C 1 45 67733 302.18 798 788 221.5
D 15 94 912081 4126.69 776 741 220.8
D 1 3 188535 850.36 776 741 220.8
D 7 70 73132 327.8 776 741 220.8

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