ASTROSAT CZTI

Data Quality Report

Orbit 12391

Creation date: 2024-06-27T16:26:34.903358
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/AS1A04_104T02_9000001838_12391cztM0_level2.evt modeM0/AS1A04_104T02_9000001838_12391cztM0_level2_quad_clean.evt
Size (bytes)1,078,885,440200,782,080
Size1.0 GB 191.5 MB
Events in quadrant A6,673,2581,409,650
Events in quadrant B13,247,4931,220,444
Events in quadrant C4,802,9641,393,277
Events in quadrant D7,217,7101,305,288

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271463
B0465242
C0220022
D0287702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108482452.258481%
B10848347932.070428%
C10848330.304204%
D108484444.092920%

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 13304 10849 31 31 0.23% 0.29%
B 13304 10849 3091 3091 23.23% 28.49%
C 13304 10850 1 1 0.01% 0.01%
D 13304 10849 358 358 2.69% 3.30%

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 615769 2397.38 1277 1253 256.3
A 1 162 385249 1498.06 1277 1253 256.3
A 1 178 202232 784.07 1277 1253 256.3
B 2 32 5183438 25046.94 1122 1095 206.9
B 2 48 2080205 10048.61 1122 1095 206.9
B 4 239 1330260 6424.03 1122 1095 206.9
C 6 96 16471 55.05 1223 1227 276.9
C 3 233 10343 32.92 1223 1227 276.9
C 13 61 9176 28.71 1223 1227 276.9
D 1 52 2015644 7098.03 1205 1171 283.8
D 10 199 233777 819.59 1205 1171 283.8
D 2 14 124404 434.21 1205 1171 283.8

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