ASTROSAT CZTI

Data Quality Report

Orbit 19187

Creation date: 2024-06-27T17:59:52.301572
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_046T01_9000002838_19187cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19187cztM0_level2_quad_clean.evt
Size (bytes)2,541,810,240420,768,000
Size2.4 GB 401.3 MB
Events in quadrant A16,596,4342,585,133
Events in quadrant B17,757,4752,659,031
Events in quadrant C19,355,0202,567,266
Events in quadrant D20,877,1522,497,317

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0727626
B0751426
C0787166
D0860116

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07220
B07220
C07220
D07220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A354504891.379408%
B354516491.830696%
C354518222.318693%
D3545114784.169135%

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 38285 35457 0 0 0.00% 0.00%
B 38286 35459 51 51 0.13% 0.14%
C 38286 35458 59 59 0.15% 0.17%
D 38286 35460 816 816 2.13% 2.30%

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 11 29 66761 72.62 4276 4181 861.8
A 8 144 55100 59.09 4276 4181 861.8
A 13 254 43584 45.72 4276 4181 861.8
B 7 220 326705 396.27 4274 4159 814.0
B 3 112 202543 243.73 4274 4159 814.0
B 0 189 175729 210.79 4274 4159 814.0
C 3 233 2450388 2517.7 4132 4160 971.6
C 14 238 631870 646.05 4132 4160 971.6
C 0 207 161249 161.68 4132 4160 971.6
D 1 52 2244043 2221.69 4156 4036 1008.2
D 10 66 1279692 1265.23 4156 4036 1008.2
D 11 176 1016319 1004.01 4156 4036 1008.2

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