ASTROSAT CZTI

Data Quality Report

Orbit 56066

Creation date: 2026-02-09T14:56:19.852656
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_56066cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56066cztM0_level2_quad_clean.evt
Size (bytes)384,742,08097,133,760
Size366.9 MB 92.6 MB
Events in quadrant A4,111,532610,976
Events in quadrant B3,055,850681,279
Events in quadrant C3,296,621604,155
Events in quadrant D3,248,025570,645

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170021
B0140551
C0151631
D0146301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68033284.821402%
B6803851.249449%
C68031602.351904%
D6803680.999559%

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 7628 6803 207 207 2.71% 3.04%
B 7628 6803 6 6 0.08% 0.09%
C 7628 6803 85 85 1.11% 1.25%
D 7628 6803 23 23 0.30% 0.34%

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 766907 4368.56 710 692 175.4
A 12 115 460012 2618.81 710 692 175.4
A 4 249 34864 194.83 710 692 175.4
B 10 247 110305 718.59 715 687 152.5
B 0 213 36053 231.84 715 687 152.5
B 9 254 23450 149.22 715 687 152.5
C 13 3 281574 1456.46 703 692 192.9
C 6 223 95701 492.65 703 692 192.9
C 12 252 64230 329.46 703 692 192.9
D 2 120 119419 592.68 703 671 200.4
D 6 239 83996 415.88 703 671 200.4
D 8 240 72347 357.74 703 671 200.4

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