ASTROSAT CZTI

Data Quality Report

Orbit 26408

Creation date: 2024-06-27T19:28:38.959329
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/AS1A09_127T01_9000003816_26408cztM0_level2.evt modeM0/AS1A09_127T01_9000003816_26408cztM0_level2_quad_clean.evt
Size (bytes)338,541,12061,228,800
Size322.9 MB 58.4 MB
Events in quadrant A1,919,250397,566
Events in quadrant B2,672,010394,334
Events in quadrant C2,648,447382,243
Events in quadrant D2,721,572378,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086170
B0107440
C0106370
D0109910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A428350.116741%
B42831623.782396%
C4284621.447246%
D42841343.127918%

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 4283 4283 0 0 0.00% 0.00%
B 4283 4283 106 106 2.47% 2.47%
C 4284 4284 18 18 0.42% 0.42%
D 4284 4284 97 97 2.26% 2.26%

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 0 13 15545 149.4 493 481 100.8
A 13 254 7458 69.2 493 481 100.8
A 3 137 4569 40.54 493 481 100.8
B 5 172 391250 4183.94 482 469 93.4
B 0 189 326764 3493.51 482 469 93.4
B 0 244 23789 249.67 482 469 93.4
C 3 233 600565 5442.48 468 471 110.3
C 2 16 96211 868.3 468 471 110.3
C 14 238 76006 685.06 468 471 110.3
D 1 52 786797 6924.19 472 458 113.6
D 12 233 65316 571.11 472 458 113.6
D 15 145 31645 274.62 472 458 113.6

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