ASTROSAT CZTI

Data Quality Report

Orbit 12927

Creation date: 2024-06-27T16:34:16.047587
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/AS1A04_224T03_9000001898_12927cztM0_level2.evt modeM0/AS1A04_224T03_9000001898_12927cztM0_level2_quad_clean.evt
Size (bytes)202,662,72051,670,080
Size193.3 MB 49.3 MB
Events in quadrant A1,505,916351,182
Events in quadrant B1,782,467338,032
Events in quadrant C1,284,942351,261
Events in quadrant D1,384,690336,827

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061522
B068891
C055111
D058371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26111636.242819%
B261131011.872846%
C26111284.902336%
D26111385.285331%

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 3667 2613 0 0 0.00% 0.00%
B 3667 2613 111 111 3.03% 4.25%
C 3667 2613 0 0 0.00% 0.00%
D 3667 2613 9 9 0.25% 0.34%

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 15 239 52248 739.72 341 333 70.2
A 1 162 44827 633.98 341 333 70.2
A 12 189 37282 526.48 341 333 70.2
B 4 239 471616 7735.31 318 309 60.9
B 3 64 54127 883.29 318 309 60.9
B 0 214 12586 201.5 318 309 60.9
C 13 61 2380 27.11 328 327 75.7
C 12 4 1774 19.11 328 327 75.7
C 8 222 1568 16.39 328 327 75.7
D 1 52 71105 910.25 328 317 77.8
D 8 195 25175 319.65 328 317 77.8
D 10 157 22110 280.23 328 317 77.8

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