ASTROSAT CZTI

Data Quality Report

Orbit 52448

Creation date: 2025-06-27T22:51:41.776871
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/AS1A13_037T01_9000006476_52448cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52448cztM0_level2_quad_clean.evt
Size (bytes)1,132,148,160136,218,240
Size1.1 GB 129.9 MB
Events in quadrant A5,850,299999,364
Events in quadrant B6,578,2221,016,793
Events in quadrant C9,288,259879,485
Events in quadrant D19,371,231492,843

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251212
B0271542
C0349842
D0648802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106122732.572559%
B106125745.408971%
C106139338.791105%
D10613525549.514746%

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 11907 10613 202 202 1.70% 1.90%
B 11907 10612 409 409 3.43% 3.85%
C 11908 10613 825 825 6.93% 7.77%
D 11907 10612 5259 5259 44.17% 49.56%

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 3 45 686244 2501.21 1104 1078 273.9
A 4 61 548633 1998.86 1104 1078 273.9
A 4 3 58379 209.18 1104 1078 273.9
B 8 234 930096 3989.45 1076 1036 232.9
B 4 171 299599 1282.05 1076 1036 232.9
B 4 170 251888 1077.18 1076 1036 232.9
C 15 231 1568047 5498.64 1038 1027 285.0
C 15 248 1520530 5331.91 1038 1027 285.0
C 13 3 770670 2700.66 1038 1027 285.0
D 6 42 11435788 48760.93 823 788 234.5
D 12 17 1350681 5756.19 823 788 234.5
D 2 153 1162340 4953.07 823 788 234.5

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