ASTROSAT CZTI

Data Quality Report

Orbit 26294

Creation date: 2024-06-27T19:27:06.316617
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/AS1A09_044T01_9000003792_26294cztM0_level2.evt modeM0/AS1A09_044T01_9000003792_26294cztM0_level2_quad_clean.evt
Size (bytes)98,853,12026,087,040
Size94.3 MB 24.9 MB
Events in quadrant A689,611172,728
Events in quadrant B650,545178,162
Events in quadrant C730,495171,829
Events in quadrant D827,506164,980

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028450
B027360
C029770
D032900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136040.294118%
B136110.073475%
C136170.514328%
D1361503.673769%

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 1360 1360 1 1 0.07% 0.07%
B 1361 1361 0 0 0.00% 0.00%
C 1361 1361 1 1 0.07% 0.07%
D 1361 1361 49 49 3.60% 3.60%

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 13 38739 1077.06 168 164 35.8
A 13 254 2244 58.08 168 164 35.8
A 3 137 1563 39.06 168 164 35.8
B 12 111 3747 105.81 165 160 33.9
B 11 111 3604 101.59 165 160 33.9
B 14 111 3252 91.21 165 160 33.9
C 3 233 49127 1246.72 160 161 39.3
C 4 254 26964 682.43 160 161 39.3
C 14 238 25375 641.97 160 161 39.3
D 12 233 134788 3365.2 161 157 40.0
D 11 176 32666 812.59 161 157 40.0
D 1 52 24724 614.07 161 157 40.0

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