ASTROSAT CZTI

Data Quality Report

Orbit 25591

Creation date: 2024-06-27T19:19:18.477682
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_043T02_9000003726_25591cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25591cztM0_level2_quad_clean.evt
Size (bytes)681,894,72065,911,680
Size650.3 MB 62.9 MB
Events in quadrant A4,604,939404,955
Events in quadrant B3,717,037414,015
Events in quadrant C3,517,236380,413
Events in quadrant D8,381,342350,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177190
B0148760
C0141060
D0293900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63942654.144510%
B6394671.047857%
C6394901.407570%
D639369610.886908%

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 7744 6395 172 172 2.22% 2.69%
B 7744 6395 7 7 0.09% 0.11%
C 7744 6395 0 0 0.00% 0.00%
D 7743 6394 495 495 6.39% 7.74%

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 6 16 544594 2996.09 924 910 181.5
A 8 192 433962 2386.43 924 910 181.5
A 9 130 68580 372.91 924 910 181.5
B 0 219 39141 222.67 928 911 171.7
B 5 235 28436 160.32 928 911 171.7
B 12 111 20104 111.79 928 911 171.7
C 14 238 141548 710.56 864 873 198.0
C 3 233 8758 39.83 864 873 198.0
C 13 61 5982 25.81 864 873 198.0
D 1 52 3880008 18865.95 840 816 205.6
D 8 195 739427 3592.14 840 816 205.6
D 2 244 264022 1280.07 840 816 205.6

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