ASTROSAT CZTI

Data Quality Report

Orbit 35334

Creation date: 2022-04-11T12:52:15.361402
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/AS1A11_093T01_9000005064_35334cztM0_level2.evt modeM0/AS1A11_093T01_9000005064_35334cztM0_level2_quad_clean.evt
Size (bytes)274,547,52037,123,200
Size261.8 MB 35.4 MB
Events in quadrant A1,455,150247,414
Events in quadrant B3,252,586212,146
Events in quadrant C1,588,789246,379
Events in quadrant D1,839,823231,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080802146
B0168645414
C084632201
D0100782738

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08015
B08021
C08021
D0-1-1

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A287480.278358%
B259672427.889060%
C2876291.008345%
D2775521.873874%

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 6198 3216 4 4 0.06% 0.12%
B 6197 2875 495 495 7.99% 17.22%
C 6203 3222 33 33 0.53% 1.02%
D 6194 3110 36 36 0.58% 1.16%

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 52388 712.25 356 350 73.1
A 8 192 12179 161.91 356 350 73.1
A 13 6 9453 124.59 356 350 73.1
B 5 236 1973008 36088.76 283 276 54.7
B 5 172 86201 1571.89 283 276 54.7
B 4 232 72483 1320.94 283 276 54.7
C 0 10 120525 1518.23 341 343 79.2
C 15 214 118739 1495.67 341 343 79.2
C 14 67 8069 97.6 341 343 79.2
D 8 195 166281 2073.97 331 322 80.0
D 2 153 83967 1045.3 331 322 80.0
D 10 204 83812 1043.36 331 322 80.0

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