ASTROSAT CZTI

Data Quality Report

Orbit 38470

Creation date: 2024-06-27T21:53:11.763952
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/AS1A12_018T01_9000005386_38470cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38470cztM0_level2_quad_clean.evt
Size (bytes)663,865,920175,458,240
Size633.1 MB 167.3 MB
Events in quadrant A5,626,8531,179,737
Events in quadrant B6,062,9271,185,435
Events in quadrant C5,389,0751,152,722
Events in quadrant D6,661,8721,050,358

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232904
B0254583
C0228583
D0273143

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10744440.409531%
B107442732.540953%
C10744800.744602%
D107442642.457185%

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 13579 10746 28 28 0.21% 0.26%
B 13579 10746 153 153 1.13% 1.42%
C 13579 10746 51 51 0.38% 0.47%
D 13579 10746 221 221 1.63% 2.06%

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 720784 2969.85 1197 1173 242.3
A 9 143 175921 721.19 1197 1173 242.3
A 12 189 74721 303.53 1197 1173 242.3
B 8 3 690025 3031.85 1178 1144 227.2
B 5 184 294543 1291.29 1178 1144 227.2
B 4 171 196464 859.63 1178 1144 227.2
C 15 214 451967 1679.73 1159 1167 268.4
C 14 254 326525 1212.32 1159 1167 268.4
C 3 110 33453 120.3 1159 1167 268.4
D 2 250 470753 1675.45 1152 1121 280.3
D 2 153 334200 1188.28 1152 1121 280.3
D 13 200 332677 1182.85 1152 1121 280.3

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