ASTROSAT CZTI

Data Quality Report

Orbit 56738

Creation date: 2026-03-24T18:29:12.802585
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_083T05_9000006560_56738cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56738cztM0_level2_quad_clean.evt
Size (bytes)532,987,20094,533,120
Size508.3 MB 90.2 MB
Events in quadrant A4,107,261621,425
Events in quadrant B4,485,743682,633
Events in quadrant C7,389,048514,917
Events in quadrant D3,236,599584,621

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168521
B0178071
C0265901
D0140161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65764526.873479%
B65763315.033455%
C6576128819.586375%
D6576540.821168%

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 7635 6575 389 389 5.09% 5.92%
B 7636 6576 204 204 2.67% 3.10%
C 7635 6575 1252 1252 16.40% 19.04%
D 7635 6575 12 12 0.16% 0.18%

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 3 62 861632 4890.62 710 692 176.0
A 10 251 460962 2614.59 710 692 176.0
A 8 249 13534 72.95 710 692 176.0
B 5 185 904990 5937.6 708 681 152.3
B 4 206 536372 3517.29 708 681 152.3
B 10 247 59227 384.41 708 681 152.3
C 15 230 3327733 18935.08 639 634 175.7
C 13 3 756779 4303.35 639 634 175.7
C 14 96 588740 3347.01 639 634 175.7
D 11 129 127507 640.08 707 676 198.1
D 3 12 70425 352.0 707 676 198.1
D 8 31 52590 261.99 707 676 198.1

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