ASTROSAT CZTI

Data Quality Report

Orbit 15376

Creation date: 2024-06-27T17:07:33.693364
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/AS1G08_035T01_9000002268_15376cztM0_level2.evt modeM0/AS1G08_035T01_9000002268_15376cztM0_level2_quad_clean.evt
Size (bytes)277,450,56056,779,200
Size264.6 MB 54.1 MB
Events in quadrant A1,509,442390,779
Events in quadrant B2,530,005379,145
Events in quadrant C1,497,638391,596
Events in quadrant D2,654,657338,075

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064832
B095391
C064311
D099871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3081280.908796%
B308132210.451152%
C3081200.649140%
D308142913.924051%

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 3402 3083 0 0 0.00% 0.00%
B 3402 3083 170 170 5.00% 5.51%
C 3402 3083 0 0 0.00% 0.00%
D 3402 3083 355 355 10.44% 11.51%

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 9 143 8159 97.0 387 378 80.2
A 15 157 6700 78.81 387 378 80.2
A 0 226 3585 39.98 387 378 80.2
B 10 16 646212 8754.44 375 366 73.8
B 10 245 148866 2012.92 375 366 73.8
B 8 3 115995 1567.35 375 366 73.8
C 3 233 46670 527.09 370 370 87.8
C 8 128 3243 32.71 370 370 87.8
C 13 61 2756 27.16 370 370 87.8
D 9 68 796667 9272.54 342 331 85.9
D 13 122 171003 1987.3 342 331 85.9
D 7 38 133230 1547.48 342 331 85.9

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