ASTROSAT CZTI

Data Quality Report

Orbit 17740

Creation date: 2024-06-27T17:40:16.532557
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_070T02_9000002634_17740cztM0_level2.evt modeM0/AS1T03_070T02_9000002634_17740cztM0_level2_quad_clean.evt
Size (bytes)128,946,24036,293,760
Size123.0 MB 34.6 MB
Events in quadrant A872,848243,055
Events in quadrant B907,348243,004
Events in quadrant C882,075234,883
Events in quadrant D1,105,297233,476

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039840
B040440
C039720
D045580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198130.151439%
B198150.252398%
C198160.302877%
D1981221.110550%

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 1981 1981 0 0 0.00% 0.00%
B 1981 1981 1 1 0.05% 0.05%
C 1981 1981 0 0 0.00% 0.00%
D 1981 1981 17 17 0.86% 0.86%

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 4963 99.45 225 219 47.7
A 15 191 2146 40.4 225 219 47.7
A 0 226 1969 36.69 225 219 47.7
B 7 220 10050 223.65 221 215 44.0
B 6 36 7948 175.85 221 215 44.0
B 0 197 5203 113.43 221 215 44.0
C 14 238 32443 633.71 214 215 50.9
C 5 218 9015 173.04 214 215 50.9
C 13 61 1516 25.58 214 215 50.9
D 1 52 208530 3454.46 220 214 60.3
D 7 238 21674 355.87 220 214 60.3
D 15 145 12860 209.71 220 214 60.3

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