ASTROSAT CZTI

Data Quality Report

Orbit 22594

Creation date: 2024-06-27T18:43:19.259582
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/AS1C05_001T01_9000003354_22594cztM0_level2.evt modeM0/AS1C05_001T01_9000003354_22594cztM0_level2_quad_clean.evt
Size (bytes)518,083,200133,191,360
Size494.1 MB 127.0 MB
Events in quadrant A3,107,728947,699
Events in quadrant B3,705,851944,265
Events in quadrant C3,155,012884,284
Events in quadrant D5,309,065832,931

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131301
B0151071
C0131761
D0198842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6081560.920901%
B60821712.811575%
C6082651.068727%
D60815929.735241%

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 7401 6082 0 0 0.00% 0.00%
B 7402 6083 41 41 0.55% 0.67%
C 7402 6083 0 0 0.00% 0.00%
D 7401 6082 547 547 7.39% 8.99%

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 13 254 10107 57.91 805 792 160.8
A 0 226 7203 39.86 805 792 160.8
A 3 137 6059 32.75 805 792 160.8
B 15 33 338136 2335.55 790 775 144.4
B 0 229 99810 685.62 790 775 144.4
B 15 35 84919 582.53 790 775 144.4
C 14 238 122111 713.88 746 751 170.0
C 10 222 114776 670.73 746 751 170.0
C 0 207 6782 35.48 746 751 170.0
D 1 52 1472686 8343.97 732 712 176.4
D 12 233 754898 4275.15 732 712 176.4
D 10 230 114151 643.04 732 712 176.4

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