ASTROSAT CZTI

Data Quality Report

Orbit 23700

Creation date: 2024-06-27T18:57:52.140512
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/AS1C05_013T02_9000003502_23700cztM0_level2.evt modeM0/AS1C05_013T02_9000003502_23700cztM0_level2_quad_clean.evt
Size (bytes)429,825,600112,262,400
Size409.9 MB 107.1 MB
Events in quadrant A2,745,773756,400
Events in quadrant B3,031,268769,780
Events in quadrant C2,863,567738,596
Events in quadrant D3,963,275710,601

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124221
B0129231
C0125341
D0159341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60831242.038468%
B60841372.251808%
C6084881.446417%
D60842574.224195%

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 6323 6083 0 0 0.00% 0.00%
B 6324 6084 11 11 0.17% 0.18%
C 6324 6085 0 0 0.00% 0.00%
D 6324 6084 171 171 2.70% 2.81%

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 13 254 10081 65.04 711 694 144.3
A 3 137 6371 39.34 711 694 144.3
A 0 226 6013 36.86 711 694 144.3
B 0 229 109920 805.38 708 689 135.6
B 15 33 30892 222.69 708 689 135.6
B 0 228 22594 161.51 708 689 135.6
C 14 238 108484 674.41 685 687 159.8
C 7 247 57261 353.94 685 687 159.8
C 8 128 11686 68.81 685 687 159.8
D 1 52 985052 5918.04 685 662 166.3
D 13 174 223639 1340.51 685 662 166.3
D 7 38 124355 743.63 685 662 166.3

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