ASTROSAT CZTI

Data Quality Report

Orbit 53648

Creation date: 2025-08-29T12:03:58.026336
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_022T05_9000006504_53648cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53648cztM0_level2_quad_clean.evt
Size (bytes)1,015,655,04083,174,400
Size968.6 MB 79.3 MB
Events in quadrant A9,010,179537,397
Events in quadrant B8,441,141571,696
Events in quadrant C12,297,685363,916
Events in quadrant D7,302,451552,380

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0316602
B0298942
C0412712
D0265572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7061183626.001983%
B7062178925.332767%
C7062342948.555650%
D7062105214.896630%

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 7351 7063 1409 1409 19.17% 19.95%
B 7352 7064 1212 1212 16.49% 17.16%
C 7352 7063 3072 3072 41.78% 43.49%
D 7352 7063 831 831 11.30% 11.77%

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 78 3939128 22184.23 709 691 177.5
A 4 191 1228573 6916.35 709 691 177.5
A 0 8 361471 2032.18 709 691 177.5
B 5 172 2950559 20151.1 677 654 146.4
B 4 206 1661547 11345.73 677 654 146.4
B 7 0 663467 4527.74 677 654 146.4
C 1 241 6759452 44358.04 547 543 152.4
C 15 224 2346208 15394.36 547 543 152.4
C 13 3 428985 2811.82 547 543 152.4
D 15 93 2578018 12174.53 726 692 211.7
D 8 176 657896 3104.44 726 692 211.7
D 3 224 218715 1029.88 726 692 211.7

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