ASTROSAT CZTI

Data Quality Report

Orbit 35421

Creation date: 2022-04-22T12:01:11.161444
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/AS1A11_097T07_9000005072_35421cztM0_level2.evt modeM0/AS1A11_097T07_9000005072_35421cztM0_level2_quad_clean.evt
Size (bytes)1,004,238,72096,903,360
Size957.7 MB 92.4 MB
Events in quadrant A4,721,823613,995
Events in quadrant B12,171,886538,370
Events in quadrant C5,849,338590,185
Events in quadrant D7,042,079543,890

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193964
B0427623
C0229233
D0270913

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9323130.139440%
B9323222123.822804%
C93232392.563553%
D93235415.802853%

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 13418 9325 0 0 0.00% 0.00%
B 13418 9325 1623 1623 12.10% 17.40%
C 13418 9325 193 193 1.44% 2.07%
D 13418 9325 391 391 2.91% 4.19%

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 10 83 201357 869.64 1164 1143 230.2
A 13 6 22635 93.35 1164 1143 230.2
A 13 254 14237 56.87 1164 1143 230.2
B 4 251 4163817 20561.75 1076 1053 202.5
B 5 236 1748617 8632.0 1076 1053 202.5
B 5 172 548497 2704.07 1076 1053 202.5
C 0 10 629148 2434.91 1116 1127 257.9
C 0 207 453953 1755.66 1116 1127 257.9
C 15 214 376010 1453.46 1116 1127 257.9
D 7 80 1378441 5177.2 1087 1058 266.0
D 8 195 548485 2057.63 1087 1058 266.0
D 13 249 431339 1617.31 1087 1058 266.0

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