ASTROSAT CZTI

Data Quality Report

Orbit 15412

Creation date: 2024-06-27T17:08:10.026180
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/AS1T02_076T01_9000002274_15412cztM0_level2.evt modeM0/AS1T02_076T01_9000002274_15412cztM0_level2_quad_clean.evt
Size (bytes)205,084,80041,662,080
Size195.6 MB 39.7 MB
Events in quadrant A1,633,263267,581
Events in quadrant B1,479,970273,799
Events in quadrant C1,455,631271,500
Events in quadrant D1,459,556258,042

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0664517
B061293
C060463
D061533

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26521053.959276%
B2653451.696193%
C2653361.356954%
D2653582.186204%

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 3800 2654 56 56 1.47% 2.11%
B 3800 2655 6 6 0.16% 0.23%
C 3800 2655 1 1 0.03% 0.04%
D 3800 2655 13 13 0.34% 0.49%

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 14 238 209353 2913.65 350 342 71.7
A 14 237 70315 975.44 350 342 71.7
A 9 143 8408 112.44 350 342 71.7
B 0 197 62954 916.77 352 342 68.3
B 0 189 16185 231.97 352 342 68.3
B 12 111 7746 108.41 352 342 68.3
C 3 233 80357 1002.03 344 346 79.8
C 7 247 24710 305.13 344 346 79.8
C 10 22 6069 71.67 344 346 79.8
D 10 70 52442 622.54 342 332 83.7
D 13 122 41325 489.73 342 332 83.7
D 7 38 20211 237.49 342 332 83.7

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