ASTROSAT CZTI

Data Quality Report

Orbit 57090

Creation date: 2026-04-17T17:20:18.035217
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/AS1A14_083T10_9000006566_57090cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57090cztM0_level2_quad_clean.evt
Size (bytes)477,100,80087,292,800
Size455.0 MB 83.2 MB
Events in quadrant A3,517,786582,304
Events in quadrant B3,656,858604,380
Events in quadrant C3,625,855556,887
Events in quadrant D6,389,013475,934

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147431
B0151301
C0149401
D0231411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60631632.688438%
B60644046.662269%
C60642043.364116%
D606480813.324538%

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 7038 6064 66 66 0.94% 1.09%
B 7039 6065 215 215 3.05% 3.54%
C 7039 6065 101 101 1.43% 1.67%
D 7039 6065 731 731 10.38% 12.05%

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 12 472177 2909.05 662 646 162.1
A 4 249 401139 2470.79 662 646 162.1
A 4 13 23507 141.04 662 646 162.1
B 10 16 854859 6362.2 631 608 134.3
B 4 171 126631 938.58 631 608 134.3
B 0 173 38089 279.15 631 608 134.3
C 2 12 214333 1201.79 648 641 177.8
C 15 198 212470 1191.31 648 641 177.8
C 14 254 137465 769.49 648 641 177.8
D 15 142 1929681 11045.21 619 589 174.7
D 12 33 1545709 8846.74 619 589 174.7
D 15 234 216323 1235.21 619 589 174.7

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