ASTROSAT CZTI

Data Quality Report

Orbit 13369

Creation date: 2024-06-27T16:39:44.998346
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/AS1G08_082T01_9000001986_13369cztM0_level2.evt modeM0/AS1G08_082T01_9000001986_13369cztM0_level2_quad_clean.evt
Size (bytes)739,581,120116,254,080
Size705.3 MB 110.9 MB
Events in quadrant A5,122,869710,621
Events in quadrant B5,477,832723,512
Events in quadrant C4,950,981715,288
Events in quadrant D6,168,497676,930

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218023
B0226542
C0212032
D0247752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A100152372.366450%
B100152382.376435%
C100151211.208188%
D100152612.606091%

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 11741 10018 60 60 0.51% 0.60%
B 11741 10018 77 77 0.66% 0.77%
C 11741 10018 1 1 0.01% 0.01%
D 11741 10018 115 115 0.98% 1.15%

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 9 143 378670 1554.84 1196 1170 242.8
A 1 162 70742 286.55 1196 1170 242.8
A 1 178 27771 109.56 1196 1170 242.8
B 3 64 629396 2745.7 1199 1165 228.8
B 0 230 63552 272.66 1199 1165 228.8
B 10 245 33435 141.04 1199 1165 228.8
C 14 220 215006 785.1 1173 1177 272.4
C 3 233 164584 599.97 1173 1177 272.4
C 13 61 8533 27.01 1173 1177 272.4
D 1 52 1043186 3733.06 1158 1122 279.1
D 8 195 426161 1522.65 1158 1122 279.1
D 14 34 129094 458.44 1158 1122 279.1

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