ASTROSAT CZTI

Data Quality Report

Orbit 16719

Creation date: 2024-06-27T17:26:43.196143
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/AS1A05_059T04_9000002476_16719cztM0_level2.evt modeM0/AS1A05_059T04_9000002476_16719cztM0_level2_quad_clean.evt
Size (bytes)325,800,00071,311,680
Size310.7 MB 68.0 MB
Events in quadrant A3,320,222474,851
Events in quadrant B1,941,836500,204
Events in quadrant C2,530,992468,231
Events in quadrant D1,834,751467,569

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122132
B080701
C099421
D076661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A350840111.431015%
B3508832.366021%
C35081424.047891%
D3508361.026226%

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 4789 3510 269 269 5.62% 7.66%
B 4789 3510 10 10 0.21% 0.28%
C 4789 3510 30 30 0.63% 0.85%
D 4789 3510 3 3 0.06% 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 15 174 1648177 18904.21 430 421 87.2
A 10 234 11536 127.52 430 421 87.2
A 0 226 3949 40.48 430 421 87.2
B 7 220 90353 1077.86 443 433 83.4
B 15 35 26666 314.45 443 433 83.4
B 0 229 18223 213.25 443 433 83.4
C 3 233 633455 6420.68 421 423 98.6
C 0 207 137400 1389.32 421 423 98.6
C 14 238 65968 664.81 421 423 98.6
D 1 52 145465 1384.53 429 415 104.8
D 11 176 30239 284.68 429 415 104.8
D 2 234 15669 145.6 429 415 104.8

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