ASTROSAT CZTI

Data Quality Report

Orbit 23028

Creation date: 2024-06-27T18:48:58.369126
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/AS1C05_004T01_9000003404_23028cztM0_level2.evt modeM0/AS1C05_004T01_9000003404_23028cztM0_level2_quad_clean.evt
Size (bytes)564,534,720105,788,160
Size538.4 MB 100.9 MB
Events in quadrant A3,038,562705,114
Events in quadrant B3,250,646735,385
Events in quadrant C3,420,601700,605
Events in quadrant D6,971,685633,774

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129622
B0135912
C0141182
D0250415

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6139210.342075%
B6139621.009936%
C61391161.889559%
D61385569.058325%

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 7484 6140 0 0 0.00% 0.00%
B 7484 6140 22 22 0.29% 0.36%
C 7484 6140 20 20 0.27% 0.33%
D 7483 6139 373 373 4.98% 6.08%

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 13 254 8767 51.0 786 772 156.8
A 0 226 6807 38.5 786 772 156.8
A 3 137 6607 37.22 786 772 156.8
B 4 216 102291 694.48 792 776 146.2
B 0 189 23690 156.76 792 776 146.2
B 12 111 16895 110.27 792 776 146.2
C 0 207 225387 1264.86 773 780 177.6
C 14 238 125961 704.95 773 780 177.6
C 0 10 39843 219.98 773 780 177.6
D 1 52 2805370 15738.96 747 727 178.2
D 9 85 646716 3625.13 747 727 178.2
D 12 227 256873 1437.43 747 727 178.2

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