ASTROSAT CZTI

Data Quality Report

Orbit 56081

Creation date: 2026-02-09T20:36:36.437266
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_083T03_9000006548_56081cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56081cztM0_level2_quad_clean.evt
Size (bytes)420,840,00099,506,880
Size401.3 MB 94.9 MB
Events in quadrant A3,552,978647,249
Events in quadrant B3,185,859698,477
Events in quadrant C3,039,166626,176
Events in quadrant D5,258,604556,342

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155495
B0145172
C0144772
D0204792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69551942.789360%
B69561672.400805%
C69561161.667625%
D69564696.742381%

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 8610 6957 67 67 0.78% 0.96%
B 8611 6958 5 5 0.06% 0.07%
C 8611 6958 3 3 0.03% 0.04%
D 8611 6958 320 320 3.72% 4.60%

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 15 32 209149 1125.63 757 739 185.1
A 12 115 131812 707.93 757 739 185.1
A 7 64 129406 694.94 757 739 185.1
B 2 249 63883 394.51 748 719 160.1
B 4 169 31993 195.33 748 719 160.1
B 0 213 25080 152.16 748 719 160.1
C 12 252 108730 534.84 740 731 201.9
C 6 9 15834 74.79 740 731 201.9
C 15 230 10817 49.95 740 731 201.9
D 2 249 726184 3549.97 723 690 204.4
D 11 129 709720 3469.41 723 690 204.4
D 8 160 575849 2814.35 723 690 204.4

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