ASTROSAT CZTI

Data Quality Report

Orbit 36110

Creation date: 2022-08-10T11:51:06.573475
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/AS1T04_069T01_9000005158_36110cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36110cztM0_level2_quad_clean.evt
Size (bytes)1,501,352,640197,478,720
Size1.4 GB 188.3 MB
Events in quadrant A7,286,2341,311,644
Events in quadrant B12,653,8141,181,433
Events in quadrant C11,021,7521,244,391
Events in quadrant D13,468,5651,178,354

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 19595 15419 2 2 0.01% 0.01%
B 19595 15418 1402 1402 7.15% 9.09%
C 19595 15419 716 716 3.65% 4.64%
D 19595 15419 1001 1001 5.11% 6.49%

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 410863 1142.92 1768 1733 358.0
A 13 6 29296 77.0 1768 1733 358.0
A 13 254 23230 60.05 1768 1733 358.0
B 5 172 4577168 14485.13 1653 1611 315.9
B 5 236 998346 3155.43 1653 1611 315.9
B 0 190 244797 769.87 1653 1611 315.9
C 1 23 2432657 6353.71 1644 1655 382.6
C 0 207 1196913 3123.95 1644 1655 382.6
C 15 214 669598 1745.75 1644 1655 382.6
D 1 52 4615086 11350.38 1668 1624 406.5
D 12 6 716590 1759.01 1668 1624 406.5
D 12 233 330276 808.57 1668 1624 406.5

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