ASTROSAT CZTI

Data Quality Report

Orbit 11509

Creation date: 2024-06-27T16:13:59.266041
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_021T05_9000001686_11509cztM0_level2.evt modeM0/AS1A04_021T05_9000001686_11509cztM0_level2_quad_clean.evt
Size (bytes)173,862,72035,832,960
Size165.8 MB 34.2 MB
Events in quadrant A1,887,122227,065
Events in quadrant B1,180,483239,291
Events in quadrant C857,050251,221
Events in quadrant D1,215,178234,279

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068520
B046540
C036550
D047430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181820611.331133%
B1818744.070407%
C181800.000000%
D1818834.565457%

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 1819 1819 143 143 7.86% 7.86%
B 1819 1819 37 37 2.03% 2.03%
C 1819 1819 0 0 0.00% 0.00%
D 1819 1819 33 33 1.81% 1.81%

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 8 5 870556 19127.46 216 211 45.5
A 14 238 98879 2168.41 216 211 45.5
A 15 223 30482 665.26 216 211 45.5
B 4 239 157351 3606.38 219 214 43.6
B 11 51 57090 1305.33 219 214 43.6
B 15 204 41977 958.48 219 214 43.6
C 13 61 1684 28.19 219 221 51.9
C 3 202 580 6.92 219 221 51.9
C -1 -1 -1 -1.0 219 221 51.9
D 13 137 207019 3847.59 219 212 53.7
D 2 120 65061 1206.5 219 212 53.7
D 13 104 30725 567.69 219 212 53.7

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