ASTROSAT CZTI

Data Quality Report

Orbit 54006

Creation date: 2025-09-22T20:53:58.623840
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_041T01_9000006510_54006cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54006cztM0_level2_quad_clean.evt
Size (bytes)594,342,72082,779,840
Size566.8 MB 78.9 MB
Events in quadrant A3,283,106609,584
Events in quadrant B5,224,355612,146
Events in quadrant C3,317,487571,871
Events in quadrant D9,700,713285,645

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143431
B0198382
C0140071
D0330581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6112981.603403%
B61125719.342277%
C6112621.014398%
D6112303749.689136%

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 7272 6113 76 76 1.05% 1.24%
B 7272 6113 428 428 5.89% 7.00%
C 7272 6113 51 51 0.70% 0.83%
D 7271 6112 2427 2427 33.38% 39.71%

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 12 115 336041 2075.58 650 635 161.6
A 15 174 227494 1403.87 650 635 161.6
A 0 8 70623 433.1 650 635 161.6
B 4 81 870435 6590.44 622 600 132.0
B 5 250 610781 4623.13 622 600 132.0
B 0 155 492628 3727.92 622 600 132.0
C 12 250 320198 1832.68 637 631 174.4
C 13 3 171151 977.91 637 631 174.4
C 12 252 100532 572.92 637 631 174.4
D 8 176 6909382 56588.8 417 398 122.1
D 12 2 425490 3481.76 417 398 122.1
D 6 239 314046 2568.97 417 398 122.1

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