ASTROSAT CZTI

Data Quality Report

Orbit 39006

Creation date: 2024-06-27T21:59:16.600326
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/AS1C06_010T05_9000005424_39006cztM0_level2.fits modeM0/AS1C06_010T05_9000005424_39006cztM0_level2_quad_clean.evt
Size (bytes)653,702,400173,770,560
Size623.4 MB 165.7 MB
Events in quadrant A7,017,4921,141,310
Events in quadrant B5,581,8471,187,624
Events in quadrant C5,006,7131,144,106
Events in quadrant D5,767,9201,052,987

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273843
B0239332
C0215672
D0245492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106234003.765415%
B106232462.315730%
C10623280.263579%
D106231341.261414%

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 13519 10625 385 385 2.85% 3.62%
B 13519 10625 184 184 1.36% 1.73%
C 13519 10625 21 21 0.16% 0.20%
D 13519 10625 135 135 1.00% 1.27%

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 15 222 1353118 5731.61 1169 1141 235.9
A 10 83 741728 3139.66 1169 1141 235.9
A 13 248 193734 816.48 1169 1141 235.9
B 5 172 923645 4152.33 1163 1128 222.2
B 0 230 48069 211.29 1163 1128 222.2
B 12 111 28592 123.62 1163 1128 222.2
C 15 214 438822 1645.6 1149 1155 266.0
C 1 23 65916 243.5 1149 1155 266.0
C 1 128 15788 55.02 1149 1155 266.0
D 12 227 746657 2683.62 1143 1109 277.8
D 2 249 164372 587.67 1143 1109 277.8
D 13 249 123358 440.04 1143 1109 277.8

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