ASTROSAT CZTI

Data Quality Report

Orbit 53243

Creation date: 2025-08-01T16:43:44.788451
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/AS1C09_011T08_9000006492_53243cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53243cztM0_level2_quad_clean.evt
Size (bytes)683,665,920103,835,520
Size652.0 MB 99.0 MB
Events in quadrant A4,719,871676,265
Events in quadrant B6,678,156716,162
Events in quadrant C9,188,861584,766
Events in quadrant D4,131,565637,191

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195370
B0251510
C0325640
D0178110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76093374.428966%
B76104606.044678%
C7610118915.624179%
D7610500.657030%

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 7609 7609 271 271 3.56% 3.56%
B 7610 7610 305 305 4.01% 4.01%
C 7610 7610 1132 1132 14.88% 14.88%
D 7610 7610 48 48 0.63% 0.63%

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 0 8 720461 3828.92 759 740 188.0
A 7 206 427372 2269.68 759 740 188.0
A 3 62 273181 1449.39 759 740 188.0
B 12 33 1496484 9350.83 747 721 160.0
B 2 249 787250 4917.02 747 721 160.0
B 10 28 678279 4235.79 747 721 160.0
C 15 224 1989774 10366.3 697 693 191.9
C 15 165 1803450 9395.25 697 693 191.9
C 1 241 1497913 7802.91 697 693 191.9
D 0 18 478113 2266.39 743 707 210.6
D 2 252 106228 500.94 743 707 210.6
D 12 3 90271 425.19 743 707 210.6

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