ASTROSAT CZTI

Data Quality Report

Orbit 23377

Creation date: 2024-06-27T18:53:32.313061
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/AS1A07_138T09_9000003458_23377cztM0_level2.evt modeM0/AS1A07_138T09_9000003458_23377cztM0_level2_quad_clean.evt
Size (bytes)853,738,560152,144,640
Size814.2 MB 145.1 MB
Events in quadrant A5,386,553990,633
Events in quadrant B5,615,5731,003,723
Events in quadrant C5,868,574960,489
Events in quadrant D8,275,164925,616

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219292
B0227282
C0236654
D0317482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105021261.199771%
B105031171.113967%
C105021611.533041%
D105034624.398743%

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 13147 10503 0 0 0.00% 0.00%
B 13148 10504 3 3 0.02% 0.03%
C 13148 10504 2 2 0.02% 0.02%
D 13148 10504 351 351 2.67% 3.34%

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 13 254 16174 53.48 1398 1371 276.8
A 0 226 12355 39.68 1398 1371 276.8
A 3 137 11241 35.66 1398 1371 276.8
B 0 189 181113 715.29 1370 1343 251.3
B 0 190 49670 192.29 1370 1343 251.3
B 12 111 29427 111.74 1370 1343 251.3
C 0 239 317812 1037.35 1334 1342 305.1
C 14 238 216598 705.58 1334 1342 305.1
C 3 233 50166 160.04 1334 1342 305.1
D 1 52 2538779 7790.75 1354 1318 325.7
D 15 0 208395 635.79 1354 1318 325.7
D 7 238 161454 491.66 1354 1318 325.7

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