ASTROSAT CZTI

Data Quality Report

Orbit 16953

Creation date: 2024-06-27T17:29:58.021006
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/AS1A05_206T01_9000002518_16953cztM0_level2.evt modeM0/AS1A05_206T01_9000002518_16953cztM0_level2_quad_clean.evt
Size (bytes)563,780,160103,904,640
Size537.7 MB 99.1 MB
Events in quadrant A3,854,444658,436
Events in quadrant B4,075,498670,367
Events in quadrant C3,890,912650,461
Events in quadrant D4,731,922632,845

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166541
B0168631
C0163001
D0191561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76872513.265253%
B76872343.044100%
C76872302.992065%
D76874525.880057%

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 8008 7690 38 38 0.47% 0.49%
B 8008 7690 7 7 0.09% 0.09%
C 8008 7690 1 1 0.01% 0.01%
D 8008 7690 211 211 2.63% 2.74%

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 15 174 261924 1383.79 924 901 188.6
A 12 189 33088 170.64 924 901 188.6
A 9 143 10264 49.64 924 901 188.6
B 3 64 100846 570.81 921 898 175.1
B 0 229 69740 393.16 921 898 175.1
B 6 36 53357 299.6 921 898 175.1
C 3 233 259495 1248.38 893 897 207.1
C 14 238 139394 668.59 893 897 207.1
C 13 61 6373 26.44 893 897 207.1
D 1 52 417854 1909.23 899 873 218.4
D 15 0 399372 1824.6 899 873 218.4
D 13 187 255472 1165.73 899 873 218.4

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