ASTROSAT CZTI

Data Quality Report

Orbit 37427

Creation date: 2024-06-27T21:39:50.757881
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/AS1A09_002T01_9000005322_37427cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37427cztM0_level2_quad_clean.evt
Size (bytes)926,997,120145,785,600
Size884.1 MB 139.0 MB
Events in quadrant A5,811,932932,430
Events in quadrant B5,555,949943,538
Events in quadrant C5,996,948946,471
Events in quadrant D9,997,991862,989

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237343
B0235862
C0245382
D0367952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105351121.063123%
B105351561.480778%
C105352392.268628%
D10535126011.960133%

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 13250 10537 78 78 0.59% 0.74%
B 13250 10537 100 100 0.75% 0.95%
C 13250 10537 215 215 1.62% 2.04%
D 13250 10537 1371 1371 10.35% 13.01%

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 10 83 473713 1993.0 1168 1145 237.1
A 15 222 394911 1660.66 1168 1145 237.1
A 9 143 327338 1375.68 1168 1145 237.1
B 5 172 419754 1905.36 1157 1128 219.7
B 4 171 292383 1325.64 1157 1128 219.7
B 5 255 50165 223.19 1157 1128 219.7
C 14 254 893943 3397.84 1131 1138 262.8
C 15 214 437809 1661.88 1131 1138 262.8
C 0 10 136812 516.35 1131 1138 262.8
D 12 227 4373691 16218.8 1105 1075 269.6
D 12 235 500292 1851.68 1105 1075 269.6
D 2 249 239437 884.13 1105 1075 269.6

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