ASTROSAT CZTI

Data Quality Report

Orbit 54573

Creation date: 2025-10-30T03:23:15.659204
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_54573cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54573cztM0_level2_quad_clean.evt
Size (bytes)457,914,24092,465,280
Size436.7 MB 88.2 MB
Events in quadrant A4,081,761595,599
Events in quadrant B4,164,780652,294
Events in quadrant C3,288,112591,928
Events in quadrant D4,931,882525,069

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162891
B0168331
C0142001
D0189951

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62244236.796272%
B62243064.916452%
C62241262.024422%
D62245598.981362%

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 7364 6225 289 289 3.92% 4.64%
B 7364 6225 138 138 1.87% 2.22%
C 7364 6225 68 68 0.92% 1.09%
D 7364 6225 431 431 5.85% 6.92%

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 948804 5615.86 681 666 168.8
A 14 235 197404 1165.29 681 666 168.8
A 3 14 114154 672.19 681 666 168.8
B 0 213 343116 2347.48 685 662 145.9
B 2 249 224245 1532.63 685 662 145.9
B 1 207 214442 1465.43 685 662 145.9
C 14 254 209882 1114.71 684 677 187.7
C 13 3 100724 533.08 684 677 187.7
C 6 223 100213 530.36 684 677 187.7
D 15 94 1888895 10203.03 656 628 185.1
D 7 70 116704 627.2 656 628 185.1
D 10 199 99572 534.63 656 628 185.1

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