ASTROSAT CZTI

Data Quality Report

Orbit 05835

Creation date: 2024-06-27T14:59:42.354877
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/AS1G06_052T01_9000000754_05835cztM0_level2.evt modeM0/AS1G06_052T01_9000000754_05835cztM0_level2_quad_clean.evt
Size (bytes)455,731,20072,380,160
Size434.6 MB 69.0 MB
Events in quadrant A4,931,612423,819
Events in quadrant B2,844,183460,829
Events in quadrant C2,698,894450,328
Events in quadrant D2,912,722430,959

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189612
B0125711
C0124981
D0130661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6094108717.837217%
B60941482.428618%
C60941131.854283%
D60941402.297342%

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 6959 6094 749 749 10.76% 12.29%
B 6959 6094 2 2 0.03% 0.03%
C 6959 6095 0 0 0.00% 0.00%
D 6959 6095 16 16 0.23% 0.26%

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 15 236 2422809 18294.3 646 629 132.4
A 15 234 13657 98.4 646 629 132.4
A 12 194 6403 43.61 646 629 132.4
B 15 204 46942 341.24 708 689 135.5
B 0 219 26567 190.92 708 689 135.5
B 12 111 12572 87.67 708 689 135.5
C 1 16 20883 128.81 681 683 156.8
C 7 234 13189 79.74 681 683 156.8
C 14 67 7580 43.98 681 683 156.8
D 2 152 167872 999.49 680 655 167.3
D 12 233 51960 306.66 680 655 167.3
D 9 85 49053 289.28 680 655 167.3

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