ASTROSAT CZTI

Data Quality Report

Orbit 20240508_C07_001T10_9000006232_level2

Creation date: 2024-05-14T10:41:22.466503
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/AS1C07_001T10_9000006232cztM0_level2.fits modeM0/AS1C07_001T10_9000006232cztM0_level2_quad_clean.evt
Size (bytes)743,993,2801,102,366,080
Size709.5 MB 1.0 GB
Events in quadrant A4,401,6087,366,920
Events in quadrant B4,332,1367,566,528
Events in quadrant C4,513,2087,448,133
Events in quadrant D3,286,3885,022,645

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0930
C0930
D0930

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02894630
B01936510
C01828640
D04063720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017680
B017680
C017680
D017680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8729325322.900576%
B8729517552.010424%
C872967750.887784%
D872972589129.658522%

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 102157 87288 0 0 0.00% 0.00%
B 102157 87280 0 0 0.00% 0.00%
C 102157 87289 0 0 0.00% 0.00%
D 102157 86435 0 0 0.00% 0.00%

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 7 110 3593 8.48 1150 1075 296.8
A 0 29 3354 7.68 1150 1075 296.8
A 14 95 3346 7.65 1150 1075 296.8
B 2 9 4090 13.49 1146 1093 222.1
B 2 8 3258 9.75 1146 1093 222.1
B 3 17 2993 8.56 1146 1093 222.1
C 1 81 3552 7.89 1193 1110 309.7
C 3 202 3466 7.61 1193 1110 309.7
C 1 80 3455 7.57 1193 1110 309.7
D 15 47 2432 5.97 943 857 264.0
D 4 12 2430 5.96 943 857 264.0
D 6 38 2419 5.92 943 857 264.0

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