ASTROSAT CZTI

Data Quality Report

Orbit 20210701_A10_071T64_9000004496_level2

Creation date: 2021-07-02T14:07:33.565636
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/AS1A10_071T64_9000004496cztM0_level2_bc.evt modeM0/AS1A10_071T64_9000004496cztM0_level2_quad_clean.evt
Size (bytes)1,085,806,080274,777,920
Size1.0 GB 262.0 MB
Events in quadrant A4,983,9041,787,429
Events in quadrant B11,369,5561,765,037
Events in quadrant C5,440,9691,681,658
Events in quadrant D9,654,8811,639,459

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04280
B04280
C04280
D04280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0452730
B0664980
C0480660
D0597330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A210452881.368496%
B210456172.931813%
C210457203.421240%
D210455962.832027%

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 26100 21046 1 1 0.00% 0.00%
B 26100 21045 7 7 0.03% 0.03%
C 26100 21045 2 2 0.01% 0.01%
D 26100 21045 69 69 0.26% 0.33%

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 40947 146.98 1271 1253 270.1
A 12 16 35375 126.34 1271 1253 270.1
A 12 96 32235 114.72 1271 1253 270.1
B 6 159 5918673 25349.03 1266 1242 233.4
B 0 190 153299 651.38 1266 1242 233.4
B 4 171 87062 367.63 1266 1242 233.4
C 0 10 374443 1317.31 1202 1201 283.3
C 3 233 292677 1028.73 1202 1201 283.3
C 4 175 68335 236.94 1202 1201 283.3
D 8 195 4289974 14062.28 1227 1200 305.0
D 13 249 133932 435.21 1227 1200 305.0
D 13 174 115723 375.5 1227 1200 305.0

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