ASTROSAT CZTI

Data Quality Report

Orbit 01066

Creation date: 2024-06-27T14:06:56.819160
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/AS1P01_998T02_9000000190_01066cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01066cztM0_level2_quad_clean.evt
Size (bytes)1,157,244,480105,062,400
Size1.1 GB 100.2 MB
Events in quadrant A7,529,506723,148
Events in quadrant B8,131,891727,065
Events in quadrant C11,909,247577,987
Events in quadrant D7,043,634697,449

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270141
B0287881
C0403501
D0255841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6523310.475241%
B6523911.395064%
C6523219233.604170%
D6523430.659206%

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 7463 6524 135 135 1.81% 2.07%
B 7463 6524 300 300 4.02% 4.60%
C 7463 6524 2305 2305 30.89% 35.33%
D 7463 6524 208 208 2.79% 3.19%

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 0 253 64240 134.07 1944 1960 464.5
A 11 79 7198 11.28 1944 1960 464.5
A 3 111 6215 9.16 1944 1960 464.5
B 5 191 292081 599.61 2030 2044 483.7
B 15 22 67789 135.92 2030 2044 483.7
B 7 221 29947 57.69 2030 2044 483.7
C 0 191 5529319 12741.27 1551 1607 433.8
C 15 241 281834 645.92 1551 1607 433.8
C 3 111 20414 43.35 1551 1607 433.8
D 9 64 162341 295.72 1764 1824 542.8
D 13 73 88701 160.05 1764 1824 542.8
D 10 125 73728 132.47 1764 1824 542.8

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