ASTROSAT CZTI

Data Quality Report

Orbit 23187

Creation date: 2024-06-27T18:51:02.135095
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/AS1A08_003T05_9000003426_23187cztM0_level2.evt modeM0/AS1A08_003T05_9000003426_23187cztM0_level2_quad_clean.evt
Size (bytes)351,270,72025,626,240
Size335.0 MB 24.4 MB
Events in quadrant A1,643,797151,303
Events in quadrant B1,769,139153,429
Events in quadrant C2,096,246149,173
Events in quadrant D4,924,828107,479

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068041
B071871
C082191
D0167001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2996180.600801%
B2996321.068091%
C29961234.105474%
D2996107835.981308%

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 2996 2996 0 0 0.00% 0.00%
B 2996 2996 0 0 0.00% 0.00%
C 2996 2996 50 50 1.67% 1.67%
D 2996 2996 883 883 29.47% 29.47%

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 6 16 6423 70.35 424 417 85.4
A 13 254 4561 48.54 424 417 85.4
A 0 226 3791 39.52 424 417 85.4
B 0 190 70659 890.42 422 414 78.9
B 0 229 41032 514.87 422 414 78.9
B 12 111 8982 108.61 422 414 78.9
C 0 10 232938 2482.48 406 410 93.7
C 3 233 85090 904.05 406 410 93.7
C 7 247 83403 886.04 406 410 93.7
D 7 238 1677170 18662.29 369 359 89.9
D 1 52 1440231 16025.25 369 359 89.9
D 12 233 304833 3388.68 369 359 89.9

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