ASTROSAT CZTI

Data Quality Report

Orbit 15609

Creation date: 2024-06-27T17:11:06.373877
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_037T01_9000002312_15609cztM0_level2.evt modeM0/AS1A04_037T01_9000002312_15609cztM0_level2_quad_clean.evt
Size (bytes)205,813,44022,708,800
Size196.3 MB 21.7 MB
Events in quadrant A1,447,717121,539
Events in quadrant B1,702,450120,851
Events in quadrant C1,439,423117,241
Events in quadrant D1,440,491116,548

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062911
B069251
C062841
D063581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29511083.659776%
B29511224.134192%
C29511214.100305%
D2951672.270417%

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 3172 2952 0 0 0.00% 0.00%
B 3172 2953 1 1 0.03% 0.03%
C 3172 2952 0 0 0.00% 0.00%
D 3172 2954 0 0 0.00% 0.00%

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 7390 91.02 370 361 77.2
A 13 248 6838 83.88 370 361 77.2
A 9 143 3668 42.82 370 361 77.2
B 4 251 186296 2536.68 366 357 73.3
B 0 197 25261 339.75 366 357 73.3
B 4 216 24903 334.87 366 357 73.3
C 14 238 53417 623.84 350 351 85.1
C 7 247 14425 165.45 350 351 85.1
C 3 233 4666 50.73 350 351 85.1
D 2 152 37397 411.72 359 348 90.0
D 5 51 18090 197.17 359 348 90.0
D 2 234 14265 154.66 359 348 90.0

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