ASTROSAT CZTI

Data Quality Report

Orbit 41204

Creation date: 2024-06-27T22:25:54.128391
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/AS1A12_100T01_9000005628_41204cztM0_level2.fits modeM0/AS1A12_100T01_9000005628_41204cztM0_level2_quad_clean.evt
Size (bytes)59,806,08015,007,680
Size57.0 MB 14.3 MB
Events in quadrant A563,738100,283
Events in quadrant B607,369100,158
Events in quadrant C438,35996,276
Events in quadrant D531,41388,686

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022382
B023891
C018361
D021921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89550.558659%
B89550.558659%
C89520.223464%
D895182.011173%

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 895 895 2 2 0.22% 0.22%
B 895 895 2 2 0.22% 0.22%
C 895 895 1 1 0.11% 0.11%
D 895 895 15 15 1.68% 1.68%

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 10 83 164396 7180.87 100 98 22.9
A 13 6 4556 194.84 100 98 22.9
A 12 189 3556 151.14 100 98 22.9
B 0 186 170781 7959.24 98 95 21.4
B 0 229 20569 954.72 98 95 21.4
B 5 255 17491 811.19 98 95 21.4
C 15 214 43091 1750.6 97 97 24.6
C 0 10 8304 334.17 97 97 24.6
C 15 111 3683 146.01 97 97 24.6
D 12 16 57776 2202.95 99 95 26.2
D 13 249 28515 1085.41 99 95 26.2
D 12 233 27820 1058.87 99 95 26.2

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