ASTROSAT CZTI

Data Quality Report

Orbit 44228

Creation date: 2024-06-27T23:00:44.371644
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/AS1A13_071T06_9000005972_44228cztM0_level2.fits modeM0/AS1A13_071T06_9000005972_44228cztM0_level2_quad_clean.evt
Size (bytes)622,843,200100,152,000
Size594.0 MB 95.5 MB
Events in quadrant A10,273,769507,925
Events in quadrant B4,001,899754,616
Events in quadrant C3,199,965733,009
Events in quadrant D5,103,275608,014

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347701
B0160701
C0136001
D0194011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6148237538.630449%
B61471792.911990%
C6148791.284971%
D614869211.255693%

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 7363 6149 1894 1894 25.72% 30.80%
B 7362 6148 44 44 0.60% 0.72%
C 7363 6149 16 16 0.22% 0.26%
D 7363 6149 463 463 6.29% 7.53%

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 15 223 6614801 52464.93 610 600 126.1
A 10 83 1261366 10000.6 610 600 126.1
A 10 248 11208 84.14 610 600 126.1
B 0 200 380500 2688.71 731 711 141.3
B 0 219 133236 938.21 731 711 141.3
B 4 158 111109 781.56 731 711 141.3
C 4 254 197095 1142.8 728 734 171.8
C 14 254 95719 552.8 728 734 171.8
C 3 233 29289 166.19 728 734 171.8
D 12 233 798343 4584.76 689 670 174.0
D 1 52 560687 3218.79 689 670 174.0
D 5 222 383888 2202.61 689 670 174.0

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