ASTROSAT CZTI

Data Quality Report

Orbit 23015

Creation date: 2024-06-27T18:48:42.654609
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/AS1A08_004T03_9000003400_23015cztM0_level2.evt modeM0/AS1A08_004T03_9000003400_23015cztM0_level2_quad_clean.evt
Size (bytes)2,102,791,680339,226,560
Size2.0 GB 323.5 MB
Events in quadrant A12,919,0152,158,734
Events in quadrant B13,636,9152,186,706
Events in quadrant C14,968,9962,067,086
Events in quadrant D20,314,6081,982,147

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0565045
B0581605
C0623995
D0787065

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05560
B05560
C05560
D05560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A273331770.647569%
B273343751.371918%
C273348513.113339%
D2733415435.644984%

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 31873 27338 1 1 0.00% 0.00%
B 31874 27339 110 110 0.35% 0.40%
C 31874 27338 296 296 0.93% 1.08%
D 31874 27339 1114 1114 3.50% 4.07%

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 11 47 228040 341.21 3293 3217 658.9
A 13 254 37183 51.55 3293 3217 658.9
A 3 137 29216 39.46 3293 3217 658.9
B 4 216 473910 757.15 3279 3190 621.7
B 0 189 101087 157.47 3279 3190 621.7
B 5 172 85627 132.6 3279 3190 621.7
C 9 15 1693259 2304.14 3150 3169 733.5
C 14 238 499027 676.02 3150 3169 733.5
C 10 9 447423 605.66 3150 3169 733.5
D 1 52 4877145 6350.56 3156 3069 767.5
D 12 227 1171313 1522.14 3156 3069 767.5
D 13 153 955439 1240.87 3156 3069 767.5

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