ASTROSAT CZTI

Data Quality Report

Orbit 16660

Creation date: 2024-06-27T17:25:48.393347
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/AS1A05_078T01_9000002462_16660cztM0_level2.evt modeM0/AS1A05_078T01_9000002462_16660cztM0_level2_quad_clean.evt
Size (bytes)491,492,160126,406,080
Size468.7 MB 120.6 MB
Events in quadrant A3,275,845876,283
Events in quadrant B3,630,899890,006
Events in quadrant C2,988,683837,451
Events in quadrant D4,581,247804,617

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136952
B0146951
C0126571
D0178121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60191131.877388%
B60191302.159827%
C6019861.428809%
D60192343.887689%

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 7340 6022 28 28 0.38% 0.46%
B 7340 6022 22 22 0.30% 0.37%
C 7340 6022 0 0 0.00% 0.00%
D 7340 6022 141 141 1.92% 2.34%

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 15 174 249196 1631.33 760 747 152.3
A 3 1 100553 655.33 760 747 152.3
A 0 226 7017 41.17 760 747 152.3
B 15 35 165433 1166.14 763 745 141.2
B 0 229 149762 1055.17 763 745 141.2
B 0 189 128238 902.76 763 745 141.2
C 14 238 113969 686.1 717 721 165.1
C 7 247 67674 405.63 717 721 165.1
C 3 233 10666 60.25 717 721 165.1
D 1 52 1256835 7291.89 717 696 172.3
D 2 16 277986 1609.67 717 696 172.3
D 10 70 140128 809.4 717 696 172.3

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