ASTROSAT CZTI

Data Quality Report

Orbit 20678

Creation date: 2024-06-27T18:18:15.775456
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/AS1A05_229T02_9000003060_20678cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20678cztM0_level2_quad_clean.evt
Size (bytes)1,321,110,720233,953,920
Size1.2 GB 223.1 MB
Events in quadrant A8,866,4301,478,814
Events in quadrant B9,851,8381,479,575
Events in quadrant C8,952,7561,441,953
Events in quadrant D11,064,7161,386,624

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388044
B0415954
C0390104
D0459555

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188561130.599279%
B188563641.930420%
C188562031.076580%
D188566293.335808%

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 21391 18860 12 12 0.06% 0.06%
B 21391 18860 142 142 0.66% 0.75%
C 21391 18860 0 0 0.00% 0.00%
D 21391 18860 398 398 1.86% 2.11%

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 5 16 155078 336.6 2253 2205 454.2
A 9 143 35352 72.98 2253 2205 454.2
A 0 226 19009 37.0 2253 2205 454.2
B 7 220 820175 1934.69 2240 2183 422.8
B 0 197 68721 157.37 2240 2183 422.8
B 0 190 61077 139.29 2240 2183 422.8
C 14 238 335998 662.21 2155 2168 504.1
C 3 233 132486 258.51 2155 2168 504.1
C 7 247 86771 167.82 2155 2168 504.1
D 1 52 1925170 3703.1 2158 2099 519.3
D 1 20 453115 868.48 2158 2099 519.3
D 7 238 258107 492.97 2158 2099 519.3

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