ASTROSAT CZTI

Data Quality Report

Orbit 23761

Creation date: 2024-06-27T18:58:24.818848
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/AS1C05_007T01_9000003518_23761cztM0_level2.evt modeM0/AS1C05_007T01_9000003518_23761cztM0_level2_quad_clean.evt
Size (bytes)745,634,880110,813,760
Size711.1 MB 105.7 MB
Events in quadrant A4,840,077695,872
Events in quadrant B5,155,733629,102
Events in quadrant C5,437,105675,705
Events in quadrant D6,469,343660,789

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133
B0131
C0131
D0133

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025450
B025450
C025438
D025444

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253384183
B0295938614
C0274934856
D0312225691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104081261.210607%
B89962923.245887%
C103442872.774555%
D102013403.333007%

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 13754 11328 0 0 0.00% 0.00%
B 1048576 9475 99 99 0.01% 1.04%
C 13756 11290 96 96 0.70% 0.85%
D 13758 11120 208 208 1.51% 1.87%

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 13 254 18244 67.19 1252 1217 253.4
A 3 137 11338 39.94 1252 1217 253.4
A 0 226 10625 37.12 1252 1217 253.4
B 3 64 870860 4289.79 1050 1023 202.8
B 0 229 72797 353.97 1050 1023 202.8
B 0 189 54983 266.12 1050 1023 202.8
C 10 9 534013 1884.21 1200 1210 282.8
C 14 238 188494 662.31 1200 1210 282.8
C 7 247 23081 77.34 1200 1210 282.8
D 8 195 888717 3061.95 1191 1157 289.9
D 1 52 785294 2705.16 1191 1157 289.9
D 13 174 153696 526.24 1191 1157 289.9

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