ASTROSAT CZTI

Data Quality Report

Orbit 14877

Creation date: 2024-06-27T17:00:43.998985
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/AS1A04_148T02_9000002198_14877cztM0_level2.evt modeM0/AS1A04_148T02_9000002198_14877cztM0_level2_quad_clean.evt
Size (bytes)273,960,00052,056,000
Size261.3 MB 49.6 MB
Events in quadrant A1,880,891328,090
Events in quadrant B2,154,614328,613
Events in quadrant C1,846,679317,372
Events in quadrant D2,136,052314,298

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082390
B090890
C081750
D093900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A407620.049068%
B407680.196271%
C407710.024528%
D407770.171695%

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 4076 4076 0 0 0.00% 0.00%
B 4076 4076 1 1 0.02% 0.02%
C 4077 4077 0 0 0.00% 0.00%
D 4077 4077 1 1 0.02% 0.02%

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 12 189 46643 483.24 472 463 95.6
A 9 143 11419 114.65 472 463 95.6
A 15 239 4794 45.32 472 463 95.6
B 0 219 214742 2400.21 467 456 89.3
B 0 189 55587 617.52 467 456 89.3
B 10 16 25875 284.72 467 456 89.3
C 3 233 99081 952.16 447 448 103.6
C 13 61 3327 27.79 447 448 103.6
C 0 207 2532 20.11 447 448 103.6
D 13 104 408162 3502.28 449 437 116.4
D 2 234 17688 148.18 449 437 116.4
D 2 120 12190 100.96 449 437 116.4

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