ASTROSAT CZTI

Data Quality Report

Orbit 52860

Creation date: 2025-07-16T11:03:14.289140
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_9000006482_52860cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52860cztM0_level2_quad_clean.evt
Size (bytes)851,716,80080,916,480
Size812.3 MB 77.2 MB
Events in quadrant A9,903,519451,818
Events in quadrant B10,092,570469,125
Events in quadrant C4,606,672559,440
Events in quadrant D6,428,746521,261

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338021
B0344651
C0182481
D0235331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6427234536.486697%
B6428244738.067828%
C64285758.945240%
D642783412.976505%

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 7592 6428 1947 1947 25.65% 30.29%
B 7593 6429 1917 1917 25.25% 29.82%
C 7593 6429 403 403 5.31% 6.27%
D 7592 6428 684 684 9.01% 10.64%

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 9 191 4218917 27762.63 608 594 151.9
A 3 62 2311349 15208.09 608 594 151.9
A 15 174 367287 2413.37 608 594 151.9
B 8 3 7003174 55563.46 604 585 126.0
B 0 213 213533 1689.68 604 585 126.0
B 4 81 89874 708.48 604 585 126.0
C 15 224 1164973 6538.73 642 635 178.1
C 7 80 297674 1668.12 642 635 178.1
C 13 3 208024 1164.66 642 635 178.1
D 8 176 1291253 7046.25 642 615 183.2
D 2 37 1177142 6423.26 642 615 183.2
D 12 2 461343 2515.35 642 615 183.2

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