ASTROSAT CZTI

Data Quality Report

Orbit 17782

Creation date: 2024-06-27T17:40:49.651513
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_015T01_9000002650_17782cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17782cztM0_level2_quad_clean.evt
Size (bytes)871,467,840138,018,240
Size831.1 MB 131.6 MB
Events in quadrant A5,863,017839,187
Events in quadrant B6,213,279847,713
Events in quadrant C5,921,243813,395
Events in quadrant D7,532,527798,975

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259132
B0267312
C0259052
D0310832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127371361.067755%
B127381731.358141%
C127381771.389543%
D127374123.234671%

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 13912 12737 0 0 0.00% 0.00%
B 13913 12738 18 18 0.13% 0.14%
C 13913 12738 0 0 0.00% 0.00%
D 13912 12737 252 252 1.81% 1.98%

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 15 174 30256 93.87 1515 1478 306.6
A 0 226 13306 38.58 1515 1478 306.6
A 4 2 12114 34.69 1515 1478 306.6
B 7 220 159811 547.08 1508 1468 289.4
B 4 142 42944 143.3 1508 1468 289.4
B 12 111 34595 114.45 1508 1468 289.4
C 14 238 220312 645.53 1442 1450 339.0
C 5 218 36548 103.52 1442 1450 339.0
C 3 233 31011 87.19 1442 1450 339.0
D 7 238 1632826 4657.87 1454 1416 350.2
D 10 70 132942 375.52 1454 1416 350.2
D 12 110 110320 310.93 1454 1416 350.2

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