ASTROSAT CZTI

Data Quality Report

Orbit 56505

Creation date: 2026-03-09T03:02:54.813656
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_060T01_9000006556_56505cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56505cztM0_level2_quad_clean.evt
Size (bytes)424,422,72095,512,320
Size404.8 MB 91.1 MB
Events in quadrant A4,715,573612,682
Events in quadrant B3,699,169678,428
Events in quadrant C2,970,390601,271
Events in quadrant D3,827,262552,336

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185172
B0153522
C0135752
D0158522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64131973.071885%
B6413981.528146%
C6413300.467800%
D64131572.448152%

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 7558 6414 223 223 2.95% 3.48%
B 7558 6414 54 54 0.71% 0.84%
C 7558 6414 17 17 0.22% 0.27%
D 7558 6414 159 159 2.10% 2.48%

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 4 95 774012 4492.02 692 676 172.2
A 0 12 685740 3979.28 692 676 172.2
A 7 64 317037 1837.62 692 676 172.2
B 4 206 554807 3732.97 693 668 148.4
B 4 171 155162 1040.75 693 668 148.4
B 0 213 62456 416.24 693 668 148.4
C 13 3 95220 503.73 676 669 187.7
C 12 252 83481 441.19 676 669 187.7
C 6 223 71119 375.33 676 669 187.7
D 3 12 369280 1955.67 661 631 188.5
D 2 249 352503 1866.67 661 631 188.5
D 2 252 96705 509.67 661 631 188.5

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