ASTROSAT CZTI

Data Quality Report

Orbit 51989

Creation date: 2025-05-09T11:15:46.864205
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_011T06_9000006468_51989cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51989cztM0_level2_quad_clean.evt
Size (bytes)683,510,40090,014,400
Size651.8 MB 85.8 MB
Events in quadrant A6,015,538556,289
Events in quadrant B5,299,942646,331
Events in quadrant C6,235,898559,042
Events in quadrant D7,252,522514,936

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222732
B0202022
C0230364
D0260662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A643390814.114721%
B64335448.456397%
C643289613.930348%
D643284113.075249%

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 7642 6434 719 719 9.41% 11.18%
B 7643 6435 289 289 3.78% 4.49%
C 7642 6434 702 702 9.19% 10.91%
D 7642 6433 729 729 9.54% 11.33%

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 7 64 2260582 13899.15 641 624 162.6
A 2 48 242473 1487.42 641 624 162.6
A 4 95 193518 1186.33 641 624 162.6
B 4 206 748879 5342.93 668 648 140.0
B 10 128 460947 3286.88 668 648 140.0
B 5 172 184262 1311.14 668 648 140.0
C 15 224 2828223 15688.1 642 634 180.2
C 13 3 417533 2313.05 642 634 180.2
C 12 252 122269 674.86 642 634 180.2
D 8 176 1161825 6399.42 633 603 181.5
D 12 17 1135066 6251.95 633 603 181.5
D 2 172 782577 4309.41 633 603 181.5

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