ASTROSAT CZTI

Data Quality Report

Orbit 21955

Creation date: 2024-06-27T18:34:27.514361
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/AS1A07_007T02_9000003244_21955cztM0_level2.evt modeM0/AS1A07_007T02_9000003244_21955cztM0_level2_quad_clean.evt
Size (bytes)488,108,16077,604,480
Size465.5 MB 74.0 MB
Events in quadrant A3,707,617477,204
Events in quadrant B3,668,063484,594
Events in quadrant C3,462,341465,280
Events in quadrant D3,490,677457,232

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153282
B0151072
C0143292
D0146402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66761321.977232%
B66771982.965404%
C66771462.186611%
D66771211.812191%

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 8806 6676 8 8 0.09% 0.12%
B 8807 6677 55 55 0.62% 0.82%
C 8807 6677 1 1 0.01% 0.01%
D 8807 6677 28 28 0.32% 0.42%

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 2 79 166518 926.09 896 877 178.9
A 4 2 90275 499.82 896 877 178.9
A 13 254 11147 57.42 896 877 178.9
B 3 64 195953 1167.62 882 859 167.1
B 12 111 20202 115.76 882 859 167.1
B 11 111 18004 102.61 882 859 167.1
C 14 238 135338 681.38 848 854 197.4
C 9 54 19063 92.26 848 854 197.4
C 13 61 5804 25.08 848 854 197.4
D 11 176 122102 583.8 864 840 207.7
D 13 174 47607 225.15 864 840 207.7
D 2 136 25066 116.63 864 840 207.7

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