ASTROSAT CZTI

Data Quality Report

Orbit 20190607_T03_036T01_9000002972_level2

Creation date: 2025-12-01T07:06:03.368869
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/AS1T03_036T01_9000002972cztM0_level2.fits modeM0/AS1T03_036T01_9000002972cztM0_level2_quad_clean.evt
Size (bytes)129,369,60062,850,240
Size123.4 MB 59.9 MB
Events in quadrant A805,652296,120
Events in quadrant B796,102288,503
Events in quadrant C797,098263,992
Events in quadrant D686,108220,986

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339750
B0297720
C0350800
D0371050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12034131710.943992%
B120344463.706166%
C120345984.969254%
D12034133011.052019%

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 15909 11972 0 0 0.00% 0.00%
B 15909 12030 0 0 0.00% 0.00%
C 15909 12031 0 0 0.00% 0.00%
D 15908 12030 0 0 0.00% 0.00%

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 29 755 10.68 210 199 52.1
A 0 30 621 8.11 210 199 52.1
A 9 19 617 8.03 210 199 52.1
B 2 9 605 9.31 210 202 43.3
B 5 128 542 7.85 210 202 43.3
B 3 17 531 7.6 210 202 43.3
C 3 202 604 7.34 210 198 55.3
C 1 81 598 7.23 210 198 55.3
C 1 80 584 6.98 210 198 55.3
D 6 83 490 5.89 196 180 52.6
D 3 14 485 5.79 196 180 52.6
D 7 3 484 5.78 196 180 52.6

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