ASTROSAT CZTI

Data Quality Report

Orbit 54121

Creation date: 2025-09-29T17:06:49.838424
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/AS1A14_012T01_9000006512_54121cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54121cztM0_level2_quad_clean.evt
Size (bytes)454,394,88088,738,560
Size433.3 MB 84.6 MB
Events in quadrant A3,103,539585,751
Events in quadrant B4,005,065631,742
Events in quadrant C2,827,447568,548
Events in quadrant D6,394,544461,295

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138891
B0162171
C0134381
D0233851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62961231.953621%
B62961432.271283%
C6297570.905193%
D6297102016.198190%

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 7191 6296 45 45 0.63% 0.71%
B 7191 6296 65 65 0.90% 1.03%
C 7192 6298 28 28 0.39% 0.44%
D 7192 6298 911 911 12.67% 14.46%

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 15 174 326369 2009.47 655 639 162.1
A 8 6 50358 306.72 655 639 162.1
A 3 14 46312 281.76 655 639 162.1
B 7 0 422897 3043.67 646 625 138.7
B 15 20 288870 2077.63 646 625 138.7
B 14 167 161417 1158.96 646 625 138.7
C 15 147 211235 1200.04 634 625 175.5
C 14 254 36559 204.75 634 625 175.5
C 12 252 25302 140.61 634 625 175.5
D 7 70 1319596 7779.46 593 565 169.6
D 8 176 809287 4769.73 593 565 169.6
D 2 165 748824 4413.12 593 565 169.6

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