ASTROSAT CZTI

Data Quality Report

Orbit 52861

Creation date: 2025-07-16T11:05:44.890723
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_52861cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52861cztM0_level2_quad_clean.evt
Size (bytes)728,991,36076,651,200
Size695.2 MB 73.1 MB
Events in quadrant A7,533,694497,483
Events in quadrant B9,341,616413,549
Events in quadrant C4,502,251510,077
Events in quadrant D5,151,856487,092

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264916
B0318871
C0174661
D0193201

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5892123420.943652%
B5893225538.265739%
C58935339.044629%
D589359910.164602%

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 7047 5893 1035 1035 14.69% 17.56%
B 7047 5892 1652 1652 23.44% 28.04%
C 7048 5894 380 380 5.39% 6.45%
D 7048 5894 477 477 6.77% 8.09%

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 3428165 23095.79 593 580 148.4
A 3 62 1075723 7244.54 593 580 148.4
A 5 241 106404 713.06 593 580 148.4
B 8 3 6486759 58357.08 528 510 111.1
B 0 213 237001 2127.72 528 510 111.1
B 10 254 80344 718.27 528 510 111.1
C 15 224 1377125 8404.25 591 584 163.8
C 13 3 352139 2146.36 591 584 163.8
C 1 44 89222 541.17 591 584 163.8
D 8 176 1058906 6287.02 594 568 168.3
D 2 37 816610 4847.67 594 568 168.3
D 12 17 230924 1368.42 594 568 168.3

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