ASTROSAT CZTI

Data Quality Report

Orbit 23026

Creation date: 2024-06-27T18:48:56.593582
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_23026cztM0_level2.evt modeM0/AS1C05_004T01_9000003404_23026cztM0_level2_quad_clean.evt
Size (bytes)469,837,440102,317,760
Size448.1 MB 97.6 MB
Events in quadrant A2,905,762681,614
Events in quadrant B3,119,530694,356
Events in quadrant C3,652,523653,225
Events in quadrant D4,130,355636,807

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127561
B0133041
C0148571
D0166421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6197210.338874%
B6198691.113262%
C61982534.081962%
D61982253.630203%

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 7352 6198 0 0 0.00% 0.00%
B 7353 6199 27 27 0.37% 0.44%
C 7353 6199 148 148 2.01% 2.39%
D 7353 6199 129 129 1.75% 2.08%

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 9220 56.01 752 735 151.5
A 0 226 6506 38.1 752 735 151.5
A 3 137 6224 36.24 752 735 151.5
B 4 216 122711 871.43 750 732 140.0
B 0 189 30429 212.16 750 732 140.0
B 12 111 16944 115.82 750 732 140.0
C 10 9 581902 3434.66 726 731 169.2
C 14 238 115699 679.45 726 731 169.2
C 0 207 74878 438.2 726 731 169.2
D 9 85 519039 2931.65 733 712 176.8
D 1 52 315850 1782.41 733 712 176.8
D 12 227 257798 1454.07 733 712 176.8

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