ASTROSAT CZTI

Data Quality Report

Orbit 19115

Creation date: 2024-06-27T17:59:12.659761
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/AS1T03_098T01_9000002836_19115cztM0_level2.evt modeM0/AS1T03_098T01_9000002836_19115cztM0_level2_quad_clean.evt
Size (bytes)500,428,80065,522,880
Size477.2 MB 62.5 MB
Events in quadrant A3,018,328390,409
Events in quadrant B3,451,483395,080
Events in quadrant C3,135,940385,750
Events in quadrant D5,114,354364,805

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130921
B0143351
C0132251
D0194761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6417470.732429%
B6417941.464859%
C6417640.997351%
D64174326.732118%

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 7307 6418 1 1 0.01% 0.02%
B 7307 6417 29 29 0.40% 0.45%
C 7307 6417 0 0 0.00% 0.00%
D 7307 6417 345 345 4.72% 5.38%

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 15 174 9085 51.87 781 763 160.4
A 13 254 6873 38.08 781 763 160.4
A 0 226 6777 37.48 781 763 160.4
B 7 220 187507 1264.8 774 755 147.7
B 10 245 97249 653.52 774 755 147.7
B 4 216 43053 286.47 774 755 147.7
C 14 238 115209 647.7 747 752 176.7
C 3 233 106800 600.11 747 752 176.7
C 13 61 5345 25.99 747 752 176.7
D 12 218 680732 3787.11 734 713 179.6
D 11 176 628890 3498.4 734 713 179.6
D 7 238 530534 2950.64 734 713 179.6

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