ASTROSAT CZTI

Data Quality Report

Orbit 16291

Creation date: 2024-06-27T17:20:40.040527
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/AS1A05_225T04_9000002400_16291cztM0_level2.evt modeM0/AS1A05_225T04_9000002400_16291cztM0_level2_quad_clean.evt
Size (bytes)705,490,560136,877,760
Size672.8 MB 130.5 MB
Events in quadrant A5,622,803863,345
Events in quadrant B5,140,183874,325
Events in quadrant C5,150,119844,034
Events in quadrant D4,745,506841,009

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02100
C02100
D02100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237833
B0220712
C0221852
D0216132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A104382482.375934%
B10438680.651466%
C10438770.737689%
D10438430.411956%

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 10974 10440 115 115 1.05% 1.10%
B 10974 10440 19 19 0.17% 0.18%
C 10974 10440 0 0 0.00% 0.00%
D 10974 10440 19 19 0.17% 0.18%

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 15 174 950031 3862.94 1214 1187 245.6
A 0 226 10683 38.66 1214 1187 245.6
A 12 194 8940 31.56 1214 1187 245.6
B 5 65 109701 462.34 1220 1189 234.7
B 0 198 75102 314.92 1220 1189 234.7
B 0 189 63584 265.85 1220 1189 234.7
C 3 233 309668 1124.06 1171 1180 274.4
C 14 238 180165 652.18 1171 1180 274.4
C 0 207 78463 281.6 1171 1180 274.4
D 10 70 135275 463.59 1188 1153 289.3
D 1 52 74002 251.8 1188 1153 289.3
D 2 234 43150 145.16 1188 1153 289.3

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