ASTROSAT CZTI

Data Quality Report

Orbit 21773

Creation date: 2024-06-27T18:32:01.719852
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/AS1A07_005T01_9000003224_21773cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21773cztM0_level2_quad_clean.evt
Size (bytes)891,806,40079,842,240
Size850.5 MB 76.1 MB
Events in quadrant A3,172,230571,324
Events in quadrant B3,691,527584,730
Events in quadrant C3,217,131555,168
Events in quadrant D16,472,654235,711

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138702
B0153741
C0138361
D0535271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6727380.564888%
B67281311.947087%
C6728851.263377%
D6728586987.232461%

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 7317 6728 0 0 0.00% 0.00%
B 7318 6729 75 75 1.02% 1.11%
C 7318 6729 0 0 0.00% 0.00%
D 7318 6728 5336 5336 72.92% 79.31%

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 15 236 13515 77.1 818 802 164.9
A 13 254 12332 69.93 818 802 164.9
A 0 226 7140 38.44 818 802 164.9
B 3 64 313159 1961.19 824 804 159.3
B 0 197 46435 286.51 824 804 159.3
B 0 230 38714 238.03 824 804 159.3
C 14 238 123946 653.92 792 799 188.3
C 13 61 5601 25.5 792 799 188.3
C 3 233 2993 11.65 792 799 188.3
D 7 238 14338736 150480.42 389 379 95.3
D 0 11 304901 3195.94 389 379 95.3
D 14 35 124257 1300.09 389 379 95.3

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