ASTROSAT CZTI

Data Quality Report

Orbit 53401

Creation date: 2025-08-12T06:26:11.645793
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/AS1C09_011T09_9000006494_53401cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53401cztM0_level2_quad_clean.evt
Size (bytes)888,396,48092,407,680
Size847.2 MB 88.1 MB
Events in quadrant A4,342,275692,156
Events in quadrant B8,916,817633,385
Events in quadrant C13,633,373336,098
Events in quadrant D5,421,303621,303

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183223
B0317373
C0455183
D0212703

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73932593.503314%
B7393163722.142567%
C7393405354.822129%
D73933594.855945%

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 7803 7395 128 128 1.64% 1.73%
B 7803 7395 1187 1187 15.21% 16.05%
C 7803 7395 3727 3727 47.76% 50.40%
D 7803 7395 288 288 3.69% 3.89%

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 358467 1863.74 768 749 191.9
A 4 249 245998 1277.77 768 749 191.9
A 7 191 176615 916.28 768 749 191.9
B 2 249 2698893 18010.29 718 694 149.8
B 4 171 1246060 8312.73 718 694 149.8
B 4 206 534409 3562.51 718 694 149.8
C 1 241 6674967 44918.61 537 532 148.6
C 15 224 2122546 14281.05 537 532 148.6
C 14 80 1256675 8453.78 537 532 148.6
D 3 12 1178539 5518.78 745 709 213.4
D 0 18 365207 1707.87 745 709 213.4
D 2 153 257797 1204.6 745 709 213.4

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