ASTROSAT CZTI

Data Quality Report

Orbit 19202

Creation date: 2024-06-27T18:00:01.025681
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_19202cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19202cztM0_level2_quad_clean.evt
Size (bytes)2,967,315,840442,788,480
Size2.8 GB 422.3 MB
Events in quadrant A27,641,7262,676,423
Events in quadrant B18,897,7912,801,789
Events in quadrant C21,755,3262,698,163
Events in quadrant D19,033,1652,646,918

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01082047
B0799247
C0883387
D0820547

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07660
B07660
C07660
D07660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A376689802.601678%
B376698402.229950%
C3766810272.726452%
D376686971.850377%

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 41198 37671 1 1 0.00% 0.00%
B 41199 37674 45 45 0.11% 0.12%
C 41198 37674 11 11 0.03% 0.03%
D 41198 37674 123 123 0.30% 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 8 192 9758995 10637.97 4569 4471 917.0
A 8 144 241754 258.77 4569 4471 917.0
A 13 254 53922 53.93 4569 4471 917.0
B 7 220 402162 447.56 4599 4470 888.6
B 12 111 109303 117.98 4599 4470 888.6
B 0 189 107795 116.28 4599 4470 888.6
C 3 233 3654211 3513.94 4436 4457 1038.6
C 14 238 685499 655.7 4436 4457 1038.6
C 0 207 113430 104.92 4436 4457 1038.6
D 10 66 837944 763.88 4514 4380 1091.2
D 11 176 311548 281.49 4514 4380 1091.2
D 1 52 246295 221.69 4514 4380 1091.2

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