ASTROSAT CZTI

Data Quality Report

Orbit 26354

Creation date: 2024-06-27T19:28:07.342019
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_143T05_9000003804_26354cztM0_level2.evt modeM0/AS1A09_143T05_9000003804_26354cztM0_level2_quad_clean.evt
Size (bytes)194,181,12037,848,960
Size185.2 MB 36.1 MB
Events in quadrant A982,355261,364
Events in quadrant B1,220,004259,110
Events in quadrant C1,660,976240,453
Events in quadrant D1,880,250240,089

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042320
B049940
C063160
D069640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1990100.502513%
B1991824.118533%
C19911537.684581%
D19911175.876444%

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 1990 1990 9 9 0.45% 0.45%
B 1991 1991 60 60 3.01% 3.01%
C 1991 1991 76 76 3.82% 3.82%
D 1991 1991 104 104 5.22% 5.22%

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 87983 1848.69 228 224 47.5
A 6 16 13531 280.32 228 224 47.5
A 13 254 3423 67.39 228 224 47.5
B 5 172 340571 7639.76 225 220 44.5
B 12 111 4736 101.37 225 220 44.5
B 11 111 3958 83.91 225 220 44.5
C 3 233 673245 12925.73 216 218 52.1
C 0 239 97739 1872.93 216 218 52.1
C 14 238 33959 648.01 216 218 52.1
D 1 52 1010542 18563.43 222 217 54.4
D 8 195 12269 221.44 222 217 54.4
D 2 234 9180 164.68 222 217 54.4

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