ASTROSAT CZTI

Data Quality Report

Orbit 54700

Creation date: 2025-11-11T16:10:31.947234
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_103T01_9000006524_54700cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54700cztM0_level2_quad_clean.evt
Size (bytes)188,360,64043,392,960
Size179.6 MB 41.4 MB
Events in quadrant A1,393,281302,001
Events in quadrant B1,740,842306,049
Events in quadrant C1,718,602264,984
Events in quadrant D1,899,473240,457

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0682
B0688
C0658
D0657

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06993892
B07815738
C08013830
D098912354

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B072
C070
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2811491.743152%
B2825782.761062%
C28371344.723299%
D27112278.373294%

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 3986 3061 0 0 0.00% 0.00%
B 3986 3087 28 28 0.70% 0.91%
C 3986 3082 104 104 2.61% 3.37%
D 3985 2947 85 85 2.13% 2.88%

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 14 93060 1135.04 311 303 81.7
A 7 190 36610 444.28 311 303 81.7
A 3 110 18149 218.38 311 303 81.7
B 2 249 440562 6523.79 303 292 67.5
B 0 213 46823 689.48 303 292 67.5
B 7 0 33845 497.18 303 292 67.5
C 9 38 361394 4289.42 298 294 84.2
C 4 5 121421 1438.84 298 294 84.2
C 1 16 16562 193.24 298 294 84.2
D 11 129 454430 5491.73 279 266 82.7
D 3 12 116330 1403.44 279 266 82.7
D 3 224 98814 1191.64 279 266 82.7

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