ASTROSAT CZTI

Data Quality Report

Orbit 20210602_C05_008T01_9000004432_level2

Creation date: 2025-12-26T06:36:53.728129
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/AS1C05_008T01_9000004432cztM0_level2.fits modeM0/AS1C05_008T01_9000004432cztM0_level2_quad_clean.evt
Size (bytes)103,838,400101,571,840
Size99.0 MB 96.9 MB
Events in quadrant A643,208617,979
Events in quadrant B603,038605,716
Events in quadrant C617,408573,550
Events in quadrant D518,600516,113

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237560
B0338640
C0257530
D0462220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110101000.908265%
B110102432.207084%
C110103122.833787%
D11010115710.508629%

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 12514 11007 0 0 0.00% 0.00%
B 12514 11006 0 0 0.00% 0.00%
C 12515 11005 0 0 0.00% 0.00%
D 12515 11008 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 0 29 575 9.66 167 158 43.2
A 7 110 514 8.25 167 158 43.2
A 14 79 476 7.37 167 158 43.2
B 2 9 437 8.22 159 152 34.7
B 3 17 424 7.84 159 152 34.7
B 3 80 399 7.12 159 152 34.7
C 12 241 450 6.74 163 152 44.2
C 3 126 439 6.49 163 152 44.2
C 3 187 425 6.18 163 152 44.2
D 6 231 380 5.93 148 135 41.3
D 15 46 374 5.78 148 135 41.3
D 12 6 367 5.62 148 135 41.3

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