ASTROSAT CZTI

Data Quality Report

Orbit 37249

Creation date: 2024-06-27T21:37:25.700434
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/AS1A10_094T07_9000005290_37249cztM0_level2.evt modeM0/AS1A10_094T07_9000005290_37249cztM0_level2_quad_clean.evt
Size (bytes)174,320,64029,136,960
Size166.2 MB 27.8 MB
Events in quadrant A1,234,250185,126
Events in quadrant B1,199,345187,252
Events in quadrant C1,276,836182,855
Events in quadrant D1,427,626178,027

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049182
B049181
C049941
D055401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2042522.546523%
B2042211.028404%
C2042602.938296%
D20421256.121450%

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 3685 2043 37 37 1.00% 1.81%
B 3685 2043 2 2 0.05% 0.10%
C 3685 2043 43 43 1.17% 2.10%
D 3685 2043 101 101 2.74% 4.94%

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 15 237 168059 3369.76 236 231 49.8
A 10 83 126651 2538.35 236 231 49.8
A 15 223 7933 154.65 236 231 49.8
B 5 200 63878 1365.31 235 228 46.6
B 4 80 54477 1163.65 235 228 46.6
B 0 230 47654 1017.3 235 228 46.6
C 14 254 119715 2155.23 232 233 55.4
C 15 214 88279 1588.18 232 233 55.4
C 0 10 84859 1526.49 232 233 55.4
D 10 253 167051 2913.88 230 223 57.3
D 13 249 93460 1628.51 230 223 57.3
D 2 250 68329 1189.56 230 223 57.3

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