ASTROSAT CZTI

Data Quality Report

Orbit 16861

Creation date: 2024-06-27T17:28:49.101595
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/AS1T03_034T01_9000002500_16861cztM0_level2.evt modeM0/AS1T03_034T01_9000002500_16861cztM0_level2_quad_clean.evt
Size (bytes)764,020,80086,425,920
Size728.6 MB 82.4 MB
Events in quadrant A4,772,080491,553
Events in quadrant B5,143,119507,040
Events in quadrant C4,979,905482,124
Events in quadrant D7,586,685463,298

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200593
B0213032
C0204252
D02920010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9699430.443345%
B9699920.948551%
C9699810.835138%
D96986306.496185%

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 12095 9702 0 0 0.00% 0.00%
B 12095 9702 3 3 0.02% 0.03%
C 12095 9702 1 1 0.01% 0.01%
D 12095 9702 503 503 4.16% 5.18%

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 0 23 17026 64.2 1235 1212 246.3
A 0 226 12009 43.83 1235 1212 246.3
A 12 194 8921 31.3 1235 1212 246.3
B 15 35 210781 914.1 1229 1201 229.3
B 4 216 56196 239.87 1229 1201 229.3
B 3 209 29259 122.38 1229 1201 229.3
C 14 238 185472 668.62 1189 1201 275.6
C 3 233 141754 509.99 1189 1201 275.6
C 0 207 15088 50.39 1189 1201 275.6
D 1 52 3071823 10755.02 1174 1140 285.5
D 2 234 37701 128.05 1174 1140 285.5
D 15 145 29397 98.97 1174 1140 285.5

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