ASTROSAT CZTI

Data Quality Report

Orbit 40640

Creation date: 2024-06-27T22:18:36.229753
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/AS1A12_029T01_9000005556_40640cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40640cztM0_level2_quad_clean.evt
Size (bytes)360,944,64094,861,440
Size344.2 MB 90.5 MB
Events in quadrant A3,033,208648,162
Events in quadrant B3,302,385658,051
Events in quadrant C3,153,330619,837
Events in quadrant D3,409,377530,940

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127013
B0136732
C0130442
D0142372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5937100.168435%
B5937731.229577%
C5937701.179047%
D59375599.415530%

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 7251 5938 1 1 0.01% 0.02%
B 7251 5938 49 49 0.68% 0.83%
C 7251 5938 71 71 0.98% 1.20%
D 7251 5938 71 71 0.98% 1.20%

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 10 83 492480 3613.43 655 643 136.1
A 2 79 11120 76.97 655 643 136.1
A 3 137 7512 50.47 655 643 136.1
B 0 190 374336 2941.51 648 629 127.0
B 0 229 258240 2027.7 648 629 127.0
B 0 230 55487 431.8 648 629 127.0
C 15 214 260502 1720.45 637 640 151.0
C 14 254 249349 1646.61 637 640 151.0
C 12 249 101684 668.98 637 640 151.0
D 12 191 173563 1148.51 603 588 150.6
D 9 19 163004 1078.4 603 588 150.6
D 2 250 158526 1048.67 603 588 150.6

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