ASTROSAT CZTI

Data Quality Report

Orbit 20160819_G05_253T02_9000000614_level2

Creation date: 2025-11-04T22:49:41.606820
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/AS1G05_253T02_9000000614cztM0_level2.fits modeM0/AS1G05_253T02_9000000614cztM0_level2_quad_clean.evt
Size (bytes)929,136,960945,380,160
Size886.1 MB 901.6 MB
Events in quadrant A5,598,3905,638,522
Events in quadrant B5,349,0865,579,614
Events in quadrant C5,497,3375,476,179
Events in quadrant D4,694,3504,940,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01750
C01750
D01740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020980
B021020
C021080
D021100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02178460
B02342920
C02183430
D02483190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10206319031.864535%
B10197222132.170204%
C10196912181.194481%
D10195133563.291777%

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 123154 102902 0 0 0.00% 0.00%
B 123154 102843 0 0 0.00% 0.00%
C 123154 102844 0 0 0.00% 0.00%
D 123154 102811 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 14 188 5530 11.2 1452 1348 373.5
A 0 29 5520 11.17 1452 1348 373.5
A 14 204 4945 9.63 1452 1348 373.5
B 2 9 4733 11.93 1412 1340 284.4
B 12 226 3867 8.89 1412 1340 284.4
B 14 254 3651 8.13 1412 1340 284.4
C 1 81 3972 6.74 1451 1333 391.4
C 1 80 3921 6.61 1451 1333 391.4
C 12 241 3912 6.59 1451 1333 391.4
D 11 82 3870 7.35 1340 1214 361.5
D 3 14 3567 6.51 1340 1214 361.5
D 7 5 3487 6.29 1340 1214 361.5

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