ASTROSAT CZTI

Data Quality Report

Orbit 20230703_A12_104T01_9000005728_level2

Creation date: 2023-07-05T12:48:34.418429
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_104T01_9000005728cztM0_level2.fits modeM0/AS1A12_104T01_9000005728cztM0_level2_quad_clean.evt
Size (bytes)818,498,880946,909,440
Size780.6 MB 903.0 MB
Events in quadrant A4,873,5945,841,571
Events in quadrant B4,684,6605,824,333
Events in quadrant C4,786,7285,593,235
Events in quadrant D4,078,7165,056,084

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019020
B019020
C019020
D019020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01992960
B01908470
C01867900
D02319080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03410
B03410
C03410
D03410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A928362160.232668%
B928362890.311302%
C92836620.066784%
D9283525242.718802%

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 125575 92836 0 0 0.00% 0.00%
B 125575 92837 0 0 0.00% 0.00%
C 125575 92837 0 0 0.00% 0.00%
D 125575 92791 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 7 110 4001 8.78 1271 1191 320.2
A 0 29 3929 8.55 1271 1191 320.2
A 9 19 3866 8.35 1271 1191 320.2
B 2 9 4112 12.32 1237 1180 238.0
B 3 80 3294 8.88 1237 1180 238.0
B 2 8 3262 8.75 1237 1180 238.0
C 1 81 3920 8.38 1263 1179 327.2
C 3 202 3814 8.05 1263 1179 327.2
C 1 80 3693 7.68 1263 1179 327.2
D 7 3 3114 6.58 1166 1058 312.6
D 10 189 3034 6.32 1166 1058 312.6
D 4 160 2942 6.02 1166 1058 312.6

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