ASTROSAT CZTI

Data Quality Report

Orbit 53601

Creation date: 2025-08-25T18:06:30.540376
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_004T05_9000006502_53601cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53601cztM0_level2_quad_clean.evt
Size (bytes)696,283,20089,660,160
Size664.0 MB 85.5 MB
Events in quadrant A3,785,492662,629
Events in quadrant B5,589,600655,149
Events in quadrant C7,792,652524,145
Events in quadrant D8,113,832429,066

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154102
B0209072
C0275438
D0284622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63572093.287714%
B635873611.575967%
C6357143222.526349%
D6357196330.879346%

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 7537 6359 72 72 0.96% 1.13%
B 7538 6360 319 319 4.23% 5.02%
C 7537 6359 1162 1162 15.42% 18.27%
D 7537 6359 1699 1699 22.54% 26.72%

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 15 174 347883 1895.06 742 725 183.2
A 3 62 157598 856.33 742 725 183.2
A 3 63 110633 599.96 742 725 183.2
B 4 206 719656 4734.05 709 685 151.9
B 10 254 715545 4706.98 709 685 151.9
B 10 28 504195 3315.35 709 685 151.9
C 15 224 3010726 17047.81 647 643 176.6
C 15 231 968923 5483.92 647 643 176.6
C 4 5 380385 2150.69 647 643 176.6
D 8 176 4427566 27008.29 578 554 163.9
D 2 153 552250 3365.78 578 554 163.9
D 10 172 136582 829.88 578 554 163.9

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