ASTROSAT CZTI

Data Quality Report

Orbit 11868

Creation date: 2024-06-27T16:19:17.844713
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/AS1A04_049T01_9000001754_11868cztM0_level2.evt modeM0/AS1A04_049T01_9000001754_11868cztM0_level2_quad_clean.evt
Size (bytes)265,374,72058,723,200
Size253.1 MB 56.0 MB
Events in quadrant A1,863,471381,946
Events in quadrant B2,399,791383,131
Events in quadrant C1,711,508387,716
Events in quadrant D1,811,197365,754

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078912
B095391
C075091
D078491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3665140.381992%
B36651794.884038%
C366550.136426%
D3665200.545703%

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 5026 3667 2 2 0.04% 0.05%
B 5026 3667 94 94 1.87% 2.56%
C 5026 3667 0 0 0.00% 0.00%
D 5026 3667 10 10 0.20% 0.27%

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 1 162 47258 512.53 445 437 91.4
A 1 178 23817 255.93 445 437 91.4
A 1 161 21213 227.42 445 437 91.4
B 4 239 447274 5381.05 442 432 83.0
B 3 64 86894 1041.21 442 432 83.0
B 10 252 48520 579.1 442 432 83.0
C 13 61 3177 27.1 438 440 101.0
C 7 247 1574 11.23 438 440 101.0
C 14 234 1312 8.64 438 440 101.0
D 1 52 47840 458.6 431 418 103.4
D 13 104 42428 406.27 431 418 103.4
D 12 233 31260 298.26 431 418 103.4

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