ASTROSAT CZTI

Data Quality Report

Orbit 26265

Creation date: 2024-06-27T19:26:46.943696
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/AS1A09_079T03_9000003790_26265cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26265cztM0_level2_quad_clean.evt
Size (bytes)748,411,200141,197,760
Size713.7 MB 134.7 MB
Events in quadrant A5,745,056874,376
Events in quadrant B5,428,942896,175
Events in quadrant C5,638,208873,161
Events in quadrant D5,096,453859,483

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243360
B0231920
C0236800
D0228950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111751751.565996%
B111751361.217002%
C111752071.852349%
D11175760.680089%

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 11705 11176 56 56 0.48% 0.50%
B 11705 11176 16 16 0.14% 0.14%
C 11705 11176 38 38 0.32% 0.34%
D 11705 11176 10 10 0.09% 0.09%

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 0 13 581125 2147.22 1332 1300 270.0
A 6 16 25456 89.46 1332 1300 270.0
A 13 254 19304 66.67 1332 1300 270.0
B 5 172 137221 536.7 1334 1300 253.3
B 12 111 31154 117.88 1334 1300 253.3
B 11 111 27392 103.03 1334 1300 253.3
C 4 254 218951 718.56 1280 1287 302.9
C 3 233 213956 702.07 1280 1287 302.9
C 14 238 201965 662.48 1280 1287 302.9
D 2 234 56901 178.14 1298 1263 312.3
D 1 52 37322 115.45 1298 1263 312.3
D 12 233 36097 111.53 1298 1263 312.3

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