ASTROSAT CZTI

Data Quality Report

Orbit 20200304_A07_001T05_9000003550_level2

Creation date: 2025-12-09T20:23:26.529761
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/AS1A07_001T05_9000003550cztM0_level2.fits modeM0/AS1A07_001T05_9000003550cztM0_level2_quad_clean.evt
Size (bytes)91,906,56078,886,080
Size87.6 MB 75.2 MB
Events in quadrant A613,382486,145
Events in quadrant B572,622478,193
Events in quadrant C561,176445,492
Events in quadrant D447,772390,345

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183840
B0188910
C0196780
D0312120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84681151.358054%
B84681391.641474%
C84682943.471894%
D8468176820.878602%

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 11083 8468 0 0 0.00% 0.00%
B 11083 8468 0 0 0.00% 0.00%
C 11083 8468 0 0 0.00% 0.00%
D 11083 8406 0 0 0.00% 0.00%

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 29 572 10.51 159 152 40.0
A 0 30 473 8.04 159 152 40.0
A 7 110 465 7.83 159 152 40.0
B 2 9 472 10.56 151 146 30.9
B 3 80 400 8.23 151 146 30.9
B 5 128 378 7.51 151 146 30.9
C 1 81 430 7.4 148 140 39.1
C 1 80 417 7.07 148 140 39.1
C 12 241 407 6.81 148 140 39.1
D 10 189 345 6.45 128 118 35.2
D 6 38 321 5.77 128 118 35.2
D 6 67 317 5.66 128 118 35.2

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