ASTROSAT CZTI

Data Quality Report

Orbit 19939

Creation date: 2024-06-27T18:09:00.659965
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_160T01_9000002970_19939cztM0_level2.evt modeM0/AS1A05_160T01_9000002970_19939cztM0_level2_quad_clean.evt
Size (bytes)851,230,080159,344,640
Size811.8 MB 152.0 MB
Events in quadrant A5,782,3711,013,326
Events in quadrant B6,013,3701,015,808
Events in quadrant C7,302,858965,936
Events in quadrant D5,831,365963,510

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254842
B0260032
C0299692
D0260342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12542750.597991%
B125421020.813267%
C125432151.714103%
D12543480.382684%

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 13812 12542 0 0 0.00% 0.00%
B 13812 12542 8 8 0.06% 0.06%
C 13813 12543 15 15 0.11% 0.12%
D 13813 12545 8 8 0.06% 0.06%

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 15 191 15647 47.03 1496 1464 301.6
A 0 226 12948 38.08 1496 1464 301.6
A 3 137 12130 35.37 1496 1464 301.6
B 7 220 57753 197.69 1487 1449 284.8
B 12 111 35434 119.33 1487 1449 284.8
B 10 247 31050 103.93 1487 1449 284.8
C 3 233 1125853 3364.76 1426 1436 334.2
C 9 221 274752 817.88 1426 1436 334.2
C 14 238 219909 653.77 1426 1436 334.2
D 7 238 122745 339.2 1457 1408 357.7
D 7 96 75226 206.36 1457 1408 357.7
D 1 52 71351 195.53 1457 1408 357.7

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter