ASTROSAT CZTI

Data Quality Report

Orbit 56915

Creation date: 2026-04-05T17:35:09.484695
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_083T14_9000006564_56915cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56915cztM0_level2_quad_clean.evt
Size (bytes)781,784,64093,582,720
Size745.6 MB 89.2 MB
Events in quadrant A8,476,812505,594
Events in quadrant B5,147,930686,056
Events in quadrant C8,803,911608,539
Events in quadrant D5,977,769552,511

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299597
B0200132
C0309782
D0226172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6898198728.805451%
B68985457.900841%
C68996559.494130%
D689980011.595883%

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 7967 6898 1728 1728 21.69% 25.05%
B 7968 6899 349 349 4.38% 5.06%
C 7969 6900 469 469 5.89% 6.80%
D 7968 6899 661 661 8.30% 9.58%

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 5754282 36230.76 633 616 158.8
A 12 15 96578 604.27 633 616 158.8
A 3 62 75548 471.84 633 616 158.8
B 5 185 1101119 7456.06 703 678 147.6
B 10 16 474244 3208.66 703 678 147.6
B 5 172 459669 3109.9 703 678 147.6
C 9 38 5303284 27570.43 698 690 192.3
C 13 3 438139 2274.48 698 690 192.3
C 14 254 75582 389.4 698 690 192.3
D 12 33 2209364 11174.18 695 660 197.7
D 2 249 256023 1291.92 695 660 197.7
D 0 160 217924 1099.17 695 660 197.7

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