ASTROSAT CZTI

Data Quality Report

Orbit 51283

Creation date: 2025-03-22T17:10:45.524647
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/AS1C07_001T01_9000006454_51283cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51283cztM0_level2_quad_clean.evt
Size (bytes)904,158,72094,412,160
Size862.3 MB 90.0 MB
Events in quadrant A7,572,949637,455
Events in quadrant B5,155,441710,236
Events in quadrant C12,554,629442,946
Events in quadrant D7,607,454545,730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278270
B0204960
C0425320
D0278930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74976718.950247%
B74984225.628168%
C7498286938.263537%
D7497110814.779245%

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 7496 7496 563 563 7.51% 7.51%
B 7497 7497 318 318 4.24% 4.24%
C 7497 7497 2964 2964 39.54% 39.54%
D 7496 7496 1163 1163 15.51% 15.51%

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 3 2332262 12629.76 744 728 184.6
A 12 250 963324 5214.32 744 728 184.6
A 9 160 281795 1522.52 744 728 184.6
B 5 185 1043057 6541.94 743 718 159.3
B 4 170 530563 3325.42 743 718 159.3
B 8 128 177124 1107.16 743 718 159.3
C 4 12 5900241 35428.69 596 591 166.5
C 10 171 3045809 18287.2 596 591 166.5
C 3 233 264453 1584.55 596 591 166.5
D 8 176 1251647 6594.89 689 667 189.7
D 7 60 1206811 6358.52 689 667 189.7
D 3 12 776651 4090.81 689 667 189.7

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