ASTROSAT CZTI

Data Quality Report

Orbit 07187

Creation date: 2024-06-27T15:16:49.575929
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/AS1A02_176T01_9000000980_07187cztM0_level2.evt modeM0/AS1A02_176T01_9000000980_07187cztM0_level2_quad_clean.evt
Size (bytes)1,611,218,880405,550,080
Size1.5 GB 386.8 MB
Events in quadrant A10,344,1152,705,397
Events in quadrant B11,300,7472,746,883
Events in quadrant C10,114,9052,700,760
Events in quadrant D15,470,4912,537,039

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0473956
B0489195
C0472715
D0619535

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231524411.904803%
B231524802.073255%
C231523261.408086%
D2315210814.669143%

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 25038 23153 0 0 0.00% 0.00%
B 25038 23152 11 11 0.04% 0.05%
C 25038 23154 0 0 0.00% 0.00%
D 25038 23152 574 574 2.29% 2.48%

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 13 248 27777 46.55 2653 2593 541.0
A 15 234 27510 46.05 2653 2593 541.0
A 0 226 25412 42.18 2653 2593 541.0
B 0 219 282566 552.99 2683 2613 506.3
B 0 214 265218 518.72 2683 2613 506.3
B 4 81 123124 238.04 2683 2613 506.3
C 13 61 20700 30.42 2583 2585 595.4
C 8 128 14922 20.72 2583 2585 595.4
C 8 112 10119 12.65 2583 2585 595.4
D 2 216 2480568 3963.78 2549 2460 625.2
D 14 34 1253356 2000.83 2549 2460 625.2
D 8 195 1183825 1889.61 2549 2460 625.2

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