ASTROSAT CZTI

Data Quality Report

Orbit 03906

Creation date: 2024-06-27T14:35:04.728266
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/AS1G05_167T01_9000000500_03906cztM0_level2.evt modeM0/AS1G05_167T01_9000000500_03906cztM0_level2_quad_clean.evt
Size (bytes)174,922,56046,785,600
Size166.8 MB 44.6 MB
Events in quadrant A1,342,750312,947
Events in quadrant B1,220,713316,184
Events in quadrant C1,227,213308,962
Events in quadrant D1,331,111295,363

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058331
B054391
C054641
D059061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2549110.431542%
B2549100.392311%
C2549220.863084%
D2549562.196940%

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 2549 2549 12 12 0.47% 0.47%
B 2549 2549 4 4 0.16% 0.16%
C 2549 2549 18 18 0.71% 0.71%
D 2549 2549 58 58 2.28% 2.28%

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 0 118 112115 1851.96 289 285 60.4
A 0 199 56674 933.83 289 285 60.4
A 8 15 24034 393.29 289 285 60.4
B 15 204 33129 563.55 298 292 58.3
B 10 16 30630 520.67 298 292 58.3
B 12 111 4485 71.96 298 292 58.3
C 12 4 39283 570.54 287 289 68.3
C 10 65 31185 452.05 287 289 68.3
C 7 222 29167 422.53 287 289 68.3
D 1 20 85606 1242.77 279 271 68.7
D 13 223 78953 1145.88 279 271 68.7
D 4 95 26325 379.44 279 271 68.7

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
Veto Counter