ASTROSAT CZTI

Data Quality Report

Orbit 07555

Creation date: 2024-06-27T15:21:30.201183
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/AS1T01_155T01_9000001042_07555cztM0_level2.evt modeM0/AS1T01_155T01_9000001042_07555cztM0_level2_quad_clean.evt
Size (bytes)111,850,56033,624,000
Size106.7 MB 32.1 MB
Events in quadrant A806,639233,158
Events in quadrant B817,620235,439
Events in quadrant C822,749226,824
Events in quadrant D842,548218,265

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032362
B032941
C032871
D033371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1398100.715308%
B1398130.929900%
C139870.500715%
D1398120.858369%

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 2648 1398 0 0 0.00% 0.00%
B 2648 1398 0 0 0.00% 0.00%
C 2648 1398 0 0 0.00% 0.00%
D 2648 1398 1 1 0.04% 0.07%

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 13 251 5637 125.11 206 203 43.4
A 1 162 3658 79.54 206 203 43.4
A 0 226 1937 39.92 206 203 43.4
B 0 219 15486 374.34 202 199 40.8
B 0 214 8978 214.98 202 199 40.8
B 15 204 8658 207.14 202 199 40.8
C 9 68 59835 1298.23 191 193 45.9
C 10 22 10375 221.63 191 193 45.9
C 8 229 2610 52.61 191 193 45.9
D 2 152 75668 1522.72 197 192 49.6
D 5 184 9413 186.03 197 192 49.6
D 5 81 3881 74.42 197 192 49.6

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